[mgarblik]

The overall cranking compression numbers are low across the board. That does NOT mean something is wrong with the engine. 1. Was the battery fully charged and cranking fast through the entire test? 2. Was the carburetor held at WOT during the test? 3. Were all the plugs removed during the test? 4. Do you happen to recall what the first puff reading was on each cylinder? First full puff reading should be at least 50% of the final reading of 5 full puffs. IMO, the difference between wet and dry readings does not indicate a piston ring issue. If the engine has been running rich for years like your plugs indicate, a running decarbonization process could restore the valve to seat seal which may be the cause of the low compression readings. This can be accomplished with a variety of chemicals and top engine cleaners run through a vacuum port into the intake of a fully warmed up engine at 2500-3000 rpm's Some people just use water for this. I like a 50-50 mix of top engine cleaner and water. It will make a HUGE, HUGE amount of smoke when you do this process so be prepared.