My tires were touching the wheel wells on bumps so I called Dexter. Called them three times and never heard from them.
I loosened the mount bolts, lowered the axles down as far as they would drop [about 3"] shimmed them with several pieces of 2" wide by 1/4" thick flat bar and tack welded them in place after lowering the unit back down. Good clearance now. Cheap fix as the Dexter kits were $125 each.
2013 Silverado 2500 HD Duramax/Allison Tuned
Aviator Wright Flyer #1919
"First In, Last Out". 11B4Y
DAV, MOPH, VFW, 5/7 Cav,1/8 Cav Assoc.
11th ABN Pathfinder Co. N7MIP