You might just want to give it an ever-so-light hone. I take mine to Autozone and they have a loaner that you can use for free. I put a little oil in the cylinder, put the hone on my cordless drill in the parking lot, and give it a few passes. When you get it home, it's a good idea to wash it with soap and water, dry it real well, then put a light film of 2 cycle or machine oil in there. When you put the piston in, I would put a bit of oil on it as well. The only harm you will do with too much oil is make a bit of smoke. That's better than a dry startup.