DL2 Pan Problems

Hi all,

I have a DL2 with some interesting pan problems.

Every time it hits a new position, it stops... then moves a couple more degrees. I unplugged and replugged the motor and encoder cables, and ran the motor calibration and it seemed to stop for a little while (the secondary movement, that is. The positions were still off.). Then, I power cycled and the issue came back.

Any ideas of what this could be? Bad pan encoder maybe? Something wrong with the motor or belt?