I picked up my z2 right before cup last year to use as a back up if my rotor was jamming on cheap paint. It worked so well that I haven't used a rotor since. Well today it went crazy. It randomly started trning forward and back. The light blinked orange. I assume it was in anti-jam but would do it even without paint. I took it apart and cleaned everything, better for a few then more of the same. Whatcha think?