Okay, could not find a ball hone as someone had said, but then another said the ball hone rounded the ports to easily.<br /><br />Another said just get a 3 stoned 220 grit dingleberry and run it up and down for a minute in each cyclinder. Oh, and another said to keep lubrication flowing why working with the hone, such as wd 40 or something.<br /><br />Alright, give me the specifics on what to do and not to do, especially concerning my ports. Also if you please tell me how do you get a 30 degree honing, not too steep - not to shallow with a three stones dingleberry.??<br /><br />Oh, someone said, "dom't do the head just the cyclinder. I do not have a head but rather cyclinders that go up and are encased with two holes for the plugs, how far up do I hone??<br /><br />1973 merc 200 20hp 2 cycle of course. thanks for your help robert/ryan