[quote]ORIGINAL: carlo71

yes the truck out of the box needs to be shimmed and gone thru as you should with ALL brands of performance trucks ANY RTR you buy will need to be prepped for the track including shimming


i am a bit new and i am not sure what needs to be shimmed??? i have had my hellfire for about 10 days now and i have had to replace a bunch of stuff on it like servo gear upgrade,rear a-arm, rear drive shaft, clutches, u-joint pins at every joint, and a few more things . anyway i have decided to tear down the truck completely and service all parts and locktight all the set screws that need it but i still am not sure what to shim??? i think it has something to do with the diffs ...

any info would be greatly appericiated