I recently tried to clean out my Andis Fade master and when I was doing so, I unscrewed all the screws to clean evrything out and when I put it back together, the blades stopped moving. I thought it might have been (maybe) i didnt put it back together correctly so I tried doing that and it still didnt work. I've put oil all over my bottom & top blade and that hasnt worked. I hear the motor in the clippers running and I havnt had any accidents so I must have fu*ked somethin' up when I was removing evrything. Has this happened to any of you barbers out there & what can/should I do?? Which part of the clippers should I check to see why the blades arent moving?