Sounds like a great time in the dez!Gave the YZ a good beating in the Desert. Fricken engine started backwards I think on the first kick. As soon as I put it in gear went in reverse WTF. I thought they fixed 2T's from ever doing that!
Check your flywheel and pulse coil. They can only run backwards if the timing gets close to TDC... Your pulse pickup may be loose and slid twords TDC timing. Good luck!
-BIG DAN