I would remove the plastic cover and fit a fan on the motor to keep it as cool as possible.

Also check the running gear is free I would shim the diffs as it makes a massive difference.

Here are some tips
http://www.thercracer.com/2014/08/ta...-and-tips.html

As an aside, got back from racing the TT02 today. (I race it outside in a Summer championship), and I managed to get FTD and also claim the win by nearly a lap.