Hi sorry to bother everyone. I am in the middle of a quick build so I can sell a blaster that I have. I have the whole bike together except the top end. I have the jug off of my old blaster that I put a vitos 240 kit on. The cylinder was perfectly fine, as was the piston when it came off my other bike. However after sitting for a few months it developed a light oxidation on the cylinder wall. My question is what do I do? Hone and put new rings on the old piston?