Its more than just a bad wheel, the NGV needs to be opened up to let more oil flow to the rear bearing and the combustion chamber needs modification or exchange. I think Jetcat USA has contacted all P180 owners to advise them to send there motors in for the upgrades. The good news is that the 180 rx will start shipping the end of September. I have had several on order since January and am glad to see that this motor has finally been sorted out.