John,
It's always good to meet a fellow neighbor Ohioan!  I'm between Mt. Vernon and Mansfield.

I need an adapter for my compression guage to screw into the energy cell opening. The manual says it is 1" - 14NF thread.  Then I can determine whether the compression leak is valves or pistons.  I am concerned that the prior owner's use of ether as a regular starting aid may have caused some piston damage. I understand that too much ether is a concern on some diesels; not sure if the Oliver fits that category.

I just want to make sure the pistons/rings are ok before I begin a valve job.  Once the head is off, I might as well replace the rings and sleeves, if it needs it.  If I'm lucky, perhaps it will only need a valve job to get it going again.

Dale