No I said that I was surprised, because the ESC fan was always on although ESC temp were always under 100F !
I use 6S 4000mAh, so the truggy is... HEAVY :D
Here for balancing, I just bought the special thing to put in the wheel, not the complete stuff :
http://www.youtube.com/watch?v=d4yYpa92ZGM
What is your truggy configuration ?