Bought this saw recently and silly me didn't check it over thoroughly. Guy said it was in perfect shape Yada Yada. Anyways turns out that there is major scoring on the piston, I have already ordered a meteor replacement. My big concern is in trying to salvage the cylinder, I am using muriatic acid and Scotch pads as well as 3000 grit sandpaper. Hoping you could give me your opinions on the cylinder condition since I have no real experience in this department. The attached pics are its current state after a bunch of acid and scrubbing sessions.