trackspot mirror bounce

Hello,

We have 2 tracks that seem to be doing this.
First, one track does not find "home" in the same place during startup. I think it has to do with the bounce.

the bounce is when the mirror is hard paned to one side. I not sure if its better on one side or another, but when it hits the stop, it bounces out to the middle. I'm looking for some help for the possible cause. I don't think it would be software, could it be the motor? I guess one thing to check, is to see that there is voltage on all pins of the control wire at the motor.

any other thoughts?

thanks.
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