Ok, so I just took apart my gearbox to rewire it all to the front. I went ahead and shimmed a bit while I had it all opened up. Before I put the piston and all that in I closed up the gearbox and used my finger to move the gears to make sure they meshed good. They moved very smoothly, so I put everything back in and closed it up for good. After putting the motor/grip on I pulled the trigger and... nothing. I could very faintly hear the motor trying to turn and when I stuck my nose up to the bottom of the grip I could smell it a little. So I then took the motor out and just held it while I pulled the trigger; it whirred to life. I took the gearbox apart like 3 times to double check everything inside and I can't figure out what could be wrong. It seems like the only viable reason would be that the gears are somehow unable to spin, but like I said they spun just fine before I put the piston in. Any thoughts? I have my first game tomorrow so I'd really like to get this working. Lol. Thanks!