i have gone through 3 drives lol first time planetary graneded second time i spun the gear on the shaft , same with the 3rd time then i found out you can buy bdx gears , and now i assembled those and i cant seem to stop the gear from rubbing on the case, its rubbing were the wholes are cut out on the gear and were the bearing sits in the case how its flanged out so the bearing can sit in the case! my case has a flat spot on the bottem of it liek were i hit something , so i got another case going to try that befor i buy the light drive! really starting to get pissed off about this tho!