Have you tried any other motors yet ??? Im currently running either a 5.5 or 6.5 Gen2 motor in my 410 and have had no issues with heat (also got a fan blowing over posts just for peace of mind). Running 23 pinion with 70 timing in dual mode (your 100 could be a bit too much when you get down to 6.5 motors. Have you always had this issue or since you have changed anything ???
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{CML Distribution}
{ Penguin Bodyshells} 
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