http://www.rctech.net/forum/9902334-post3306.html
Here is what happend to me on the whole balance the pod thing.. I noticed the pod was off balance with the motor so i added 3mm worth of shims and the pod was correct. Then i went out and practiced and the car was horrible. So i took the shims out and ran the car again and she was back to good. So i am not sure it really matters and i will not be doing it in the future..
The last few races my car has been the best driving car i have had since 1s lipo's have come out.
Again this is all my opinion.
Mike Blackstock