Hi Ray, just a suggestion, you might want to contact Laurie directly by telephone at Castle Creations. I suffered a similiar situation to yours and she was very quick to resolve my problem. It's quite possible that it's NOT your Himax 210 motor! If it were me, I'd install another ESC and see what happens before I'd just ship the Himax motor back and waste alot of time and $. Regards, Everette