I have the Polaris 900 rc snowmobile and accidently fried the controller because I got it wet. My son wasn't too happy with me and now that its snowing he wants me to try to fix it. I beleive it has a 540 elctric motor. If you know of a controller that will work with this could you tell me plz. My son is just getting into the big Rc craze and I feel so bad for wrecking it on him [&o]....