Re: power loss to motor
Set your multimeter to 20k ohms and disconnect the two throttle wires running to your controller from the pot.
It doesn't matter which probe lead you connect to the wires just as long as they are connected.
Gradually press the go pedal while watching the multimeter to see if the resistance goes from 0 to 5k (or pretty close) the full range of the pedal. See if the numbers jump anywhere during pedal travel.
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