Gearing advice, please. I'm running a Hobbywing 1800 kv motor with the new HW XR8 ESC on 4S power. Punch is set at 5, timing at 1 (no advance timing). No turbo set. With an 18 tooth pinion it drives fast and responsive, but really hot, like 210 degrees when it comes off the track. 17 tooth is still pretty warm - 180ish but looks and feels slow so I don't want to go to a 16.

Bad motor maybe? How is everyone here gearing their trucks? Thanks for any help.