Hi All. Just got to run my new vtx10r with a vst 8.5 motor in my X60cf. it replaced a castle sidewinder with a 4 pole 3800kv. first impressions, way smoother power delivery from a stand still to about 2/3 speed, from there on to seems to labor at hi speed where the castle seemed to love to rev with good power. I started out with a 20t pinion and 78 spur, after 5 laps (SRS Phoenix) I pulled in to check temps, the esc was at 106 the motor was at 168. Surprised to say the least, wasn't expecting to see temps that hi. I set the esc to #2 profile when I installed the system. It was reving out on the main straight so I bumped the pinion to 22, better on the straight but not enough so went to 24, speed was good but the castle still had top end on it, still getting hot after 5 laps or so and still seems to be laboring at hi rpms. I could run the castle until the low voltage shut it down with temps around 150 on the motor. It was much easier to drive as throttle control was excellent as was the braking, just need to get a handle on the heat, any ideas?