Seems to be pretty common issue. I can only move mine forward by doing it while panic braking, or having one of my kids push it from behind. Going back seems to work better but I still usually assist it with leg power.
I have taken the seat out and swapped the front/back motor with the up/down motor, and the brushes, and still doesn't work. I didn't think it was the track, but if I get a chance to take it out again I will check.
At least the drivers side auto movement can be turned off, the passenger side can't.