| Alan,
If I remember correctly, the Marlin motor supplied with the mechanical speed controller is a very power greedy thing. I think a few years ago MFA changed the spec of the Marlin, so I would contact them and ask for the running specs of the old motor you have. It might save you from burning out a speed controller, as if you ask for one for a Marlin, they might supply one for the newer spec motor, and it won't have enough grunt to run the older spec motor.
John |