the avid shafts come bent... I sent two back and got replacements that were also bent and a few guys that I race with also had bent shafts with the avid kit. Slide the motor away from the spur then spin your wheels. You will see the treaded portion wobble.
[QUOTE=Flip boy;12596519]
Originally Posted by
rc car guy
I have three 4.2s and the one in question has a new idler ,diff gear and aluminum top shaft with a triad slipper(avid centering kit) the other 2 are whisper quiet and bone stock,also im just asuming......and it is only a low speed pitch issue
