it was prolly too loose...run it down snug then back off a 1/4 turn...if all ur runnin is a 3.3 the stock slipper is plenty good its just a matter of getting it adjusted right...id spende ur money on sum rpm shock moubts and bulk heads...those are the weakiest points of the t maxx...the frame connectors would be highly reccomended as well...all ive stated would greatly help espically if ur gonna be jumpin and playin