update
 

ok after my wife razzing me about my new found hobby. i was laying on the cement in my garage looking at the tail. I noticed after i spun up and down the belt was not turning that good when it was in free mode on the belt hub (i can sure chop up the terminology). so i tightened up the tail (this was the hradest thing to keep the damn thing in place as I tightened up the lil screws.
tons better...

i dont really think its my gyro, i think after i set up my blades and change my stock 9 tooth pinion gear to a 10 ( may go 11 will see) ill post my results.

RE: update
 

Good to hear that you're getting there. I fly the 3900kv esky brushless motor with a 9 tooth pinion with no problems. I'm not sure more teeth are going to solve this.