I back off until you hear a ticking then tighten 1/2 turn. That's what some of the guys here recommended.
I did mine while running. Gets a little messy but not too bad.
Today I ran another leak down test on cylinders 5&6.
1) results were about the same as before
2) loosened valves, they seemed a bit tight, but no change
3) with valves loose, put oil in chamber. I don't think there were changes. I tightened the valves not running, startup tomorrow.
Inconclusive results today.
Mark
