I have the PRG Total Chaos Lowering Shackles and Deaveer C-10 leaf pak....no problem from them other than rust.
The shackle mount that is welded to the frame is cracking on the left and right sides of the truck. This is where the lower half of the leaf spring shackle attaches.
Left and Right pics. included.
Has anyone looked here?!
73K miles.

Attached Thumbnails

   

__________________

3-29-05 Born ...4/09/05 Adopted... SEKC...
4 x 4 Off Road with Big Tow and no E-loc... Blizzard...Graphite/Titanium Interior, Popular Package, Bench Seat.

Bilstein front/rear shocks, Deaver Mini-Pak Springs, Total Chaos Shackles, Hellwig Anti-Sway Bar, TrueTrac, Mag-Hytec "Honeypot", HK Axle Vent Mod, Frozen Rotors-Hawk Pads.
ARE Z shell, OEM bug/rock/gut deflector, Lund AVS Ventvisors, Bushwhacker- notched-Fender Flares, Burtman Stainless Steel Titan Door Sills, Black Vinyl Door Edge Molding on front doors and vertical sides of Tailgate, Spoiler Direct Chrome Tailgate Trim, Utilitrac System, OEM Dual Lower Sliding Trays, OEM under-seat-storganiser, Silver Star Low Beams, White Night Backup Lights, CT Windshield Sun Reflector, Drawtite Activator II trailer-e-brake control, Super-Z-Winter Traction Cables, Dueler AT REVO Tires-3rd set, Nitrogen in tires, NISSAN I-POD adapter, Bosch Icon blades, Optima Red Top Battery.

Amsoil: SEVERE GEAR 75-140W Synthetic In Rear and Front Differential, ATF Synthetic in Transfer Case,
Signature Series 0-30W synthetic engine oil, EAO13 oil filter, EaA104 Nano-fiber engine air filter
6 x 10' low bed/rails trailer with E-brakes, 100 year old rebuilt 4,000 lb. road roller/packer

JFK on Climate Change/Energy Revolution http://www.youtube.com/watch?v=J8dLHZ6jKFc
JFK JR. "We Have the Capability and Technology to Eliminate 100% of our Needs for Persian Gulf OIl" http://www.youtube.com/watch?v=Heku9oTLysg
"PEACE TO THE PEOPLE OF ALL NATIONS" The TRUTH is still EVERYWHERE...I said this ~!!!~

I'll look at mine in the daylight and get back to you.

If I read your post correctly, it is the stock mount that is cracking. From the photo, I would guess that the cracks are forming from the added stress on the mount from the extended PRG mount. The added leverage of the lowering mount is putting un-designed for stresses on the stock mount.

I wonder if the cracks could be repaired by welding the cracks. You would have to "vee" out the crack to properly do the weld correctly. Another issue are the stresses in the mount from the stamping, but I would think the OEM would have stressed relieved the stampings.

Keep us informed of what you end up doing please.

Red

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2005 Titan KC SE, Helwig, True-Track, ARE MX Canopy

Following Red's info, I wonder if the welding process itself contributed to hardening the mounts, and lead to the cracks. When I worked for Cat, we would stress relieve various welded assemblies for just that reason.

Talked with mr. PRG.....he said to weld them. Gonna grind the vee and have one of my welders beef it up.
Hope you guys are checking yours!

__________________

3-29-05 Born ...4/09/05 Adopted... SEKC...
4 x 4 Off Road with Big Tow and no E-loc... Blizzard...Graphite/Titanium Interior, Popular Package, Bench Seat.

Bilstein front/rear shocks, Deaver Mini-Pak Springs, Total Chaos Shackles, Hellwig Anti-Sway Bar, TrueTrac, Mag-Hytec "Honeypot", HK Axle Vent Mod, Frozen Rotors-Hawk Pads.
ARE Z shell, OEM bug/rock/gut deflector, Lund AVS Ventvisors, Bushwhacker- notched-Fender Flares, Burtman Stainless Steel Titan Door Sills, Black Vinyl Door Edge Molding on front doors and vertical sides of Tailgate, Spoiler Direct Chrome Tailgate Trim, Utilitrac System, OEM Dual Lower Sliding Trays, OEM under-seat-storganiser, Silver Star Low Beams, White Night Backup Lights, CT Windshield Sun Reflector, Drawtite Activator II trailer-e-brake control, Super-Z-Winter Traction Cables, Dueler AT REVO Tires-3rd set, Nitrogen in tires, NISSAN I-POD adapter, Bosch Icon blades, Optima Red Top Battery.

Amsoil: SEVERE GEAR 75-140W Synthetic In Rear and Front Differential, ATF Synthetic in Transfer Case,
Signature Series 0-30W synthetic engine oil, EAO13 oil filter, EaA104 Nano-fiber engine air filter
6 x 10' low bed/rails trailer with E-brakes, 100 year old rebuilt 4,000 lb. road roller/packer

JFK on Climate Change/Energy Revolution http://www.youtube.com/watch?v=J8dLHZ6jKFc
JFK JR. "We Have the Capability and Technology to Eliminate 100% of our Needs for Persian Gulf OIl" http://www.youtube.com/watch?v=Heku9oTLysg
"PEACE TO THE PEOPLE OF ALL NATIONS" The TRUTH is still EVERYWHERE...I said this ~!!!~

make sure to get that surface rust off and spray some rustoleum on there... you've got some serious corrosion over there.

__________________
PRGbuilt
born 12/3, purchased 1/4 '04 Smoke SE KC PRG MT kit, CST spindles, PRG Spec'd SAWs 2.5" C/Os w/Eibachs, SAW Airbumps, CST carrier bearing, 37x12.5x17 Pro Comp Extreme All-Terrains, American Racing Mojave Teflons, HID low beams, Magnaflow custom exhaust, Injen CAI Filter, ID FRP prerunner fenders, front windshield tinted, Optima Yellow Top, Pioneer AVH-4100DVD w/ipod adapter connected to 80gb iPod, Sirius, HD radio tuner, Hertz 6.5" Components front, Boston 6.5" rear, Boston G1 10" subs, tech12 sub enclosure, Alpine amps, Eclipse BEC106 backup camera, TrueTrac, regeared from 2.94s to 4.11s, CTW TT prerunner fiberglass bedsides, Giant Motorsports under axle conversion kit w/64" deavers (21" rear travel) with Giant custom built rear bedcage and KING 3.0 bypass shocks...

VIDS!!! http://vimeo.com/groups/h00ligan/videos

I guess so with over 1,500 stream crossings!........"Rust Never Sleeps" !

__________________

3-29-05 Born ...4/09/05 Adopted... SEKC...
4 x 4 Off Road with Big Tow and no E-loc... Blizzard...Graphite/Titanium Interior, Popular Package, Bench Seat.

Bilstein front/rear shocks, Deaver Mini-Pak Springs, Total Chaos Shackles, Hellwig Anti-Sway Bar, TrueTrac, Mag-Hytec "Honeypot", HK Axle Vent Mod, Frozen Rotors-Hawk Pads.
ARE Z shell, OEM bug/rock/gut deflector, Lund AVS Ventvisors, Bushwhacker- notched-Fender Flares, Burtman Stainless Steel Titan Door Sills, Black Vinyl Door Edge Molding on front doors and vertical sides of Tailgate, Spoiler Direct Chrome Tailgate Trim, Utilitrac System, OEM Dual Lower Sliding Trays, OEM under-seat-storganiser, Silver Star Low Beams, White Night Backup Lights, CT Windshield Sun Reflector, Drawtite Activator II trailer-e-brake control, Super-Z-Winter Traction Cables, Dueler AT REVO Tires-3rd set, Nitrogen in tires, NISSAN I-POD adapter, Bosch Icon blades, Optima Red Top Battery.

Amsoil: SEVERE GEAR 75-140W Synthetic In Rear and Front Differential, ATF Synthetic in Transfer Case,
Signature Series 0-30W synthetic engine oil, EAO13 oil filter, EaA104 Nano-fiber engine air filter
6 x 10' low bed/rails trailer with E-brakes, 100 year old rebuilt 4,000 lb. road roller/packer

JFK on Climate Change/Energy Revolution http://www.youtube.com/watch?v=J8dLHZ6jKFc
JFK JR. "We Have the Capability and Technology to Eliminate 100% of our Needs for Persian Gulf OIl" http://www.youtube.com/watch?v=Heku9oTLysg
"PEACE TO THE PEOPLE OF ALL NATIONS" The TRUTH is still EVERYWHERE...I said this ~!!!~