Flexing motor mount?

[jnev]

I'd stick to the RCM mounts. Same thing happened to me, except mine was after only one or two bashes with small jumps. My motor was also able to wobble about 1cm, so it was quite a bit. I sent Mike an email, and he replaced it for me for free. Now thats customer service. Just contact him through email, and he should take car of you.

[starscream]

The longer your motor can the more flex you may see on any given motor mount.

Are you using the rear bottom support? If not install it.

I would recommend using a strap/clamp, such as a zip tie, to hold the motor flush to the rear support so that the rear of the motor can can't move up or down. This should solve any flex issues you're seeing.