If you're always on full throttle, probably time to move up to faster motor. Just like 1:1 cars, modulating the throttle works better; and going WOT, only when you need to accelerate. There is a whole new world between 0 and 100. It's difficult to feel it out at first, but it will allow you to drive like you're sitting inside the vehicle.
I have actually lived for 25 years flying high performance e-powered planes and gliders without a IR thermometer without blowing anything up because of heat but with that said on a plane you are not always WOT when flying, especially, pylon planes.....I need to give the old brain a break after a couple 130+ MPH circuits
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Right now I have a 81T spur and 44T pinion for a FDR of 5.02 actually. I will put in a 51T pinion which will bring me down to 4.33. I also have a 77T spur which should fit with the 51T pinion which gets me to 3.92 but I am thinking that may be pushing it.
Cheers,
Jim