[IamSherwood]

I did pull them out and they were just like the pressure release minus the bolt. They had a plunger and spring under each one.

Being they are on either side of the left spool, I think they are probably detents. Does that valve have

a float position that it stays in, when pushed forward?

As said, a lot of those valves don't have O-rings on the spools. I'm guessing that bolt in the pressure

relief valve is the culprit.

 

[IamSherwood]

Get yourself a pressure gauge, and tee it into the down stroke side of your lift

cylinders. Could be the seals in the cylinders.