Thanks Tony. Yes I have check all of the things you said. I found that the tail section was machined wrong and the part where the blades fit into was not right. I took it all apart about 6 times before I found this and compared it with another tail
section. The bearings in side were moving around and getting hot with friction. Cost me over 100 dollars to discover this. I could have brought another heli. Still Christmas is coming so you never know LOL. Cheers.