I had problems with my evolution trainer motor when i got my first plane. Got help from someone who i thought had experiance in rc planes. Problem is he wasn't familiar with the evolution motors. We both thought it was running fine. I let him take it up but it died just after take off . I repaired it strugled and strugled to get it running well crashing a few more times ( not much damage). Then broke down went to a local club. Guy there wound the needles past the limiters and started from scratch. He had it running like a swiss watch in about 10 min. I let him test fly it for me , all went great. Ive been able to go months now at a time needing little too no tuning. I now have 2 evo 60's that ive had better luck with. and the evo pts still runnning well. I still need advice from other's at times when it comes to tunning though. Not saying there isn't something wrong with your motor , im not sure. Just saying might want another first hand opinion. Good luck. PS ( borrowed a 46 os AX from my brother, don't think ill give it back. im going to buy another to replace it)