I can't answer your question , only pose one of my own and point out an issue i had today. BE sure to use your little allen wrench and tighten the collars on the main shaft. I did not check them and they came loose today and now my swashplate is separating and my main motor does not turn. I even took it out and it won't turn without load either. I was also wondering if anyone knew if I can upgrade to metal parts are ony other models parts compatible???