I had a hard landing to put it mildly and did a little damage to my Trex 450. New main blades, main shaft, tail boom and torque tube. Aileron and pitch servos needed some fixing too. I've come across an issue with one of the servos. Pitch servo stopped working after the crash. I pulled it apart found no gear damage, lubed and put it back together. All seemed to operate fine. While fine tuning setup again in sub trim servo has stopped working. Connections seem fine, the only thing I can think of is an internal connection gone bad. Does anyone have any other thoughts?