[jspatz1]

The Nano we just recieved actually had interferance between the internal hex of the output shaft and the first stage gear. They were literally hitting each other and locking up. We had to remove the output shaft and sand off the corners of the hex to free it up. Make sure you don't have this problem, although I'm sure you would know it if you did. Is it noisey? (Noisier than usual that is.)