I replaced the motor in our KP50. No issues,

I replaced the motor in our KP50. No issues, until I got the motor control in. The contactor arm will not close, or slide off the plastic slide attached to the adjust lever. Can anyone give me a simple process for adjusting this thing so it is off at off, and has all its speeds back...do I need to simply replace the control board too, or has anyone been able to get that contactor arm to ramp up and down the plastic slide the way it's supposed to? As far as I can see, that is the only issue. The governer is good, the motor and brushes are new...just this controller.

Thanks for any and all help!