Hey thecheatscalc,
I'll try adjusting the pitch to get it hovering around 3/4 stick next time. As I mentioned earlier, the belt-tension seems to be OK, when tested as the manual describes. Again, I don't have anything to compare it to, but it feels right. Doesn't require much pressure to almost make the insides touch near the gear. I read somewhere on these forums that the belt should be so loose that it slips if you hold the main rotor and turn the tail-rotor with little force. Mine doesn't seem to slip very easily, but I don't dare to put too much force on it. Besides, the belt and the gears it runs between seem to have a mesh as well, which seems to be there to actually prevent slipping. Maybe they were talking about a different heli, but I seem to remember that it was the Rex.
The batteries get little more than hand-warm during most of the flight, but their generated heat rises sharply to around 40 or 50 degrees C at the very end of their discharge.
AFAIK, this is normal for LiPo's. I've set my (soft) LVC to around 3V per cell under load. Unfortunately, I don't have the correct cable to measure current-draw at the moment. Calculated from the approximate flight-time I get from my 1800mAh LiPo's (around 10 minutes), I estimate the average current-draw to be around 10A.
Anyways, thanks for your help. I'll probably try a different motor if I can't find another fix.
Grtz,
Traveller