Well I'm not sure it's the battery. The night that I deliberately drained it, it took nearly two full hours to charge, so I figured I got a good charge. It did make a difference, but I still didn't get it off the floor. I haven't had time since then to devote to it (guess I need to quit my job and leave my wife and devote my time to Axe maintenance ). I have some parts on the way but in the meantime, someone in another thread suggested that the motor might have gotten jounced in a crash and the motor gear may have gotten forced into the main gear and is too tight and hindering speed. So I'll check that out as well as trying to fix tracking. I just hope this doesn't all turn out to be a problem with the e-board; I'm not sure how to determine that.