Sanding sleeves work great if that is what's wrong. I worked for a mechanic that would clean the piston down with GOOP to get rid of that film your talking about. As far as Dale and the supreme green packings they are both the best. We only use the 900 series packing anymore. I think they are like a 20 dollar add a real no brainer. We also use Cat oil for overly tight packings and provantage for leaking packings (repack in a bottle)
