I have an OS.46Fx about 7 years old although I never ran it until last year. It ran fine for a short time and then lost compression and I found the sleeve was peeling like crazy and purchased another piston and sleeve. I now find that the same thing is occuring again. the peeling is severe enough to affect compression and forms a paste of material in the cylinder. Is this common or I am doing something wrong? I don't want to buy another piston and sleeve for half the cost of a new motor and have it happen again. Thanks