Yesterday was running along and was up in the tower and my son yelled to me the motor was making noise. I looked down and while throttling back checked to see if motor was peeing, and it was. At idle it started making clunking noise so I shut off motor. looked the motor over didnt see anything obvious tried re-start and nothing... thought motor was seized. called a friend for a tow and after 45 min he arrived and tried to start it and started right up .... began to clunk shut it off and and towed it back to dock/lift. Today checked all plugs and found top port cylinder plug clean as a whistle while all the others were normal carbon coated. Plugs were replaced in June with about 50 hrs. Was going to do a pressure test but didnt want to make things worse, is this possible rod or bearing or both?