i have never had one of these 450's, but as far as the intermittent turning of the main rotor and tail, it sounds like your one-way bearing is bad. that is what allows the main gear, which is normally attached directly to the motor pinion, to engage with the tail drive gear. no problem that the main rotor turns in both directions. normally when you turn it cc, just the main gear and motor should turn, but when turned clockwise, both top and bottom gears should turn without slipping. if the heli was spooled up during the crash, it could have put the one-way bearing in a bind when the tail hit and damaged it. i went online and looked at the manual for your heli and from what i saw, if your idle mode pitch and normal mode pitch adjustments are not set up properly (i.e. o pitch, ect) for each flight mode, then your swash is not going to work properly. you should do as suggested earlier and UNPLUG the motor and go through the manual and make sure they are set up properly. its not forthcoming with a lot of info, but it will take you through basic setup. also check that all switches on the tx are in the proper position. i wouldnt worry about the fin, but i would replace the boom the first chance i got, just to avoid any issues later. i dont know if you have the manual, but here it is if you dont..........[link]http://www.dynam-rc.com/download/E-RAZOR450.pfd[/link]

its good to check everything after a crash. if the blades hit, your main shaft and spindle could be bent also. it just may be hard to tell because you havent got the head up to speed..............get back to us, let us know. hope this helped...........td



trex 450, trex 500, trex 600, srb quark, blade 400............