Looking forward to how this goes. I am concerned however if those sight glass hex bolts used a different thread and are jammed in place. Fixable, but a hassle for sure.
For $100 to the door, you got a great deal.
Rog
I took them out this morning. They are the correct thread, not homemade and look like all my other Jensen sight glass bolts other than the hex heads with the JS logo. Soaking in vinegar now. Pretty cool.