Not again Aangel
I don't think there's many people skilled enough to fry a controller rated for 224 amps
But something must have been wrong with that controller to start with since it was limiting your speed. Maybe hitting the limiter or whatever it is all the time put extra strain on it?
As for what controller would be better, I'd have thought the 22418 would have been the best bet...obviously not. Maybe try and contact MGM and see what they, because it just didn't sound right. Chances are you'll get they same sort of response as last time (didn't they say you weren't programing right and there was nothing wrong?), but you'll at least need to find out if what it was doing was normal (it couldn't be though) or how to avoid doing it again.