I've got a valcano epx pro... switched out the system in it number of times.. I've just recently put in a velineon vxl-3s and now can't get the gear mesh right to save my life... I've striped 5 pinion gears in the last day or so... what am I doing wrong ?.. plz help..

use the ole. paper thing fold a piece of paper so u have 2 sheets the smash pinion and spur together .tighten motor screws .pull paper out..should work.