Well pulled my motor this weekend. Oil lines starved the front cylinder and piston started to break apart on top. Motor still ran on back cylinder. Upon closer inner inspection cylinder walls aren't showing any damage. Front cylinder ring is broken and top of piston dome is chewed up! I found small metal shaving in entry to crank area. Crank still spins fine with no damage. I'm worried about shaving's down in crank area. 288 hrs on original motor, and was wondering if a full rebuild is in order or should the bottom end be taken apart and inspected for metal shavings. I am mechanically inclined and wonder how difficult a bottom end disassemble is? For the price of a top end rebuild and crank replacement isn't a complete engine rebuild smarter to do? Any advice would be appreciated. (I believe oil lines developed a vapor lock and engine starved for oil. Oil cap was difficult to remove for some reason). My ski is a fuel injected model.