....
It's a bit tricky to adjust the trunnion spring, but you'll get it going.
Good Luck,
Wayne
So this must be the little screw/spring for the piston mount - what is the proper "adjustment"? As I did take this screw off to check things out - which was a PITA to get off and back on again. I just tighten it down went I put it back on. I took it off since I though the piston was broken (the seesawing action) before I learned this is how the engine works.
What was the O-ring size for the sight glass? Mine leaks slightly from the top, though the corrosion has me concerned if I could actually get it a part without breaking stuff. I already messed up my tank after needing to sweat back in the whistle/steam line fitting on the front of the tank. I don't think I'll ever get that front cover steam fixed that I compromised (pretty sure if I try I'll make it worse).