Originally posted by jeffreylin
if your gearbox pinches your bearing then you need to re-build it--something is off. there was an article in one of the japanese rc magazines devoted to talking about building the evo4 and made special note about how important to build the gear box right.
is your rear gearbox binding? if not then why should the front? i tighten my screws as tight as possible and the drivetrain is very free.
I second that, if when you tighten the gearbox tops the bearings start to bind up then you have some quite major issues in there. Rick