Lehner Cogging/not running
 

So my 1940/7 has run very well for me for quite some time. I recently transplanted it from my G2R (on 5S and 6S) into my RC8.2e with a Tekno chassis (running 5S) and it ran beautifully for a few packs. Then after fully charging a pack I brought it out, it did about half a lap and then started cogging and won't get going again. Switching ESCs did not help, and I checked motor wires for shorts or a bad connection and I get nothing.

Any ideas? I would hate to lose this motor...