Hi, wake, It probably is the semi-fried Rx (if you did switch Tx off first few times (it's quite sensitive on it) or have a few crashes (even more sensitive on this one... =) ) Electronics in blade have no vibration and mechanical-damage protection so... =/
3in1 looks only after main and tail motor (including gyro) so I don't think it's the problem...
Try a new Rx - It's a few bucks (well, two fews...)

good luck...

Kryso

EDIT: oh, and check the right polarity on servos' connectors... =) (sorry, I hope you're not that blunt...)