If all else fails.....get yourself to the International FROG Rally in Goshen, IN. and let the factoy folks replace them. I promise thay do GREAT work.
2011 FORD F350 CREW CAB DUALLY DIESEL 4x2
2010 Salem LA 292FKDS
One of the Original 14 F.R.O.G.s
1st, 2nd, and 3rd INTERNATIONAL F.R.O.G. RALLY Branson. MO.
1st, 2nd, and 4th INTERNATIONAL RALLY Goshen, IN.