Hey guys I recently had a mishap with one of my 450 clones and after setting it back up again with new main and feathering shafts (0 pitch @ half throttle my heli developed a vibration and the blades seem to make a lot of noise when spooling up. Any help would be appreciated. the tracking seems to be ok but it's like something is out of balance. when I hover it acts like it's going to shake itself apart.