I've got a 2006 200hp HPDI that is showing 85 for the compression for cylinder 3. All others are 110-115. Anybody run into this before? If so, do I replace the piston, do a total rebuild, or just re-power? Mechanic said that there didn't look to be much carbon built up and the cylinders looks pretty cleaned but that the "piston has a little more play in it than it should." I'm taking it to get a second opinion with a Yamaha guy this weekend but wanted to reach out here.

Thanks!