I knew the FX series had issues with liners peeling. I haven't heard about it nearly as much with the AX series. I'll agree with you that Novarossi is a top notch engine, definitely a step up from OS. Super Tigers were beasts, but a pain to tune. That's a moot point now though. I don't think of Jett as a competitor for OS given the much higher price. They are top of the line no doubt, but you can own 2 OS engines for the price of 1 Jett. It's a different type of customer.