We've already replaced the valve seals.
The compression ranged from 115 to 125 PSI dry and 125 to 130 wet.
We also took out the spark plugs and put some Marvel mystery oil in each cylinder and let it sit for 5 days thinking that the rings were stuck. This did clear up the smoke for a couple of days but it came back. I really feel that there is something that happens to these engines if they don't get a lot of usage and sit for a while.
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