Quark fried, blown capacitor...

zpb, yes I am getting cogging. Sometimes it's so bad it's embarrassing. Sometimes it doesn't do it at all. I wouldn't consider the setup race worthy, although you can definitely bash with it. Once it's rolling it's fine. If you come to a complete stop, getting going again is iffy. If you are at a complete stop and there is any resistance in your path, forget about getting going again.