Falcon 40 electric Tail Rotor Help

[newjack]

Bought my first helicopter, a "Falcon 40" about two months ago. Latest problem is the tail rudder no longer has sufficient authority to counteract the main rotor when the heli starts to climb (even with full right trim). Burnt up one tail motor before this, is it possible that the new motor is tired (partly burnt)? or is the helicopter brain not sending enough juice to the tail? I've replaced the tail gear b/c I though it might be slipping (didn't fix the prob). Any suggestions?


Thanks,
Isaac

Oh, and the reason I haven't switched out the tail motor again is it seems to have the same amount of power it used to (spinning it flat on the ground for example).