I know this is an old thread but I was wondering what you did. The same thing almost happened to me but the coils in the cylinder werent damaged like yours. The shaft was just ate up due to a bearing (the wrap around the magnets is gone). Just wondering if Tekin makes a rebuild kit. I have a T8 2650. I have seen the brushless shafts on a main but looks like they are 1/10. They are 12.5, 13 and 14mm. Anyone know whats up?