If there is a lift on the truck, make sure the Load Sensing Prop Valve attached to the rear axle has been properly adjusted to compensate for the lift:
- http://www.4crawler.com/4x4/4R_suspension.shtml#ProportioningValve

If not done, the rear brake bias is reduced by a great degree, making the front brakes do much more of the work.

Might also consider using a better brand of rotors, maybe you are getting a cheap brand at the shop.

r.c.brown@ieee.org
TruckEditor@tlca.org
Project: 4Crawler
4Crawler OffRoad - 4x4Wire discount code