Mamba Maxx overheating?

OK I have 2 almost exactly the same setups. 1 stock plastic Pede, and 1 full aluminum Pede.

I have them both programmed exactly the same.

Stock Pede
MM5700
12/90 gearing
Trany notched for more air to motor
And my motor temps are getting up to 180-190 degrees!!!!!!!!

FLM Pede
MM5700
15/86 gearing
Aluminum trany with nothing surrounding the motor
Motor temps run between 130-150, usually 140.

When I tried running 15/86 gearing on my Stock Pede the temps got up to 240 before I caught it.
Nothing is binding, and mesh it good. Both are running the same batteries, 7 cell IB4200's.
Why am I getting 40+ degrees more with the stock Pede with lower gearing? And 90+ degrees with the same gearing as my other Pede?

I dont hear anyone else complaining there temps are getting to high in there Pedes with stock tranys. Im wondering if my motor is defective. I already emailed CC but Im sure it will be a week or so before I get a responce. I need to swap motors and see what happens, but I havent had time.