Ok, well when I get home tonight I'll check the brush colour, but I'll also add a bunch of air holes to the intake type areas in front and behind the motor.
Are heatsinks for the motors generally worth while, or more for show? The ESC has a heatsink already, so can't do much there.
Again, with the solder, I'm a bit stuffed until Modelsport get my solder out to me
Cheers!