I bought a 1978 puch maxi off a friend for 10 bucks. It hasn't been running in about 8 years and the engine was siezed. I soaked the sieze and knocked it out. The cylinder has a ring of rust maybe about .5mm to 1mm thick where it was siezed. Anything i can do to get this off without having to have the cylinder honed out. I have basic to moderate skills with engines. This is my first ever moped.