Case 2090 leaking between remote valves

I have a Case 2090 that is leaking between the remote valves when the forward most remote lever is moved with no implement hooked up.

This tractor has two remotes.

Tried changing o-rings, but problem seems to be the one remote valve.

With the tractor at idle, you can move the lever for the back remote up or down and there are no leaks.

If you move the lever for the front remote, it is ok moving the remote lever up, but if you pull it back, fluid gushes out from between the two remote valves on the block.

If you hook up a hydraulic hose to make a loop at the rear of the tractor for the front remote valve, there are no leaks.

Tried replacing o-rings between the valves on the stack.

Took out the offending remote valve and now only have one valve in the ‘stack’. No leaks when moving the remote lever up or down with nothing hooked up to the tractor.

What is wrong with my bad valve that allows the pressure to dead head and push past the o-rings when two remotes are sandwiched together?

Does it have a relief valve that isn’t allowing the oil to move through?

Thanks

Tractor was not laboring.

Just blew a hydraulic hose on the rake and developed the remote leak at the same time.

Turns out you were right - the remote had a 2” long hairline crack in it that could only be seen in the right light.

Crack was on the machined flat surface of the remote valve.

Thanks for the help!

Should note that a hydraulic hose had blown up on a hay rake the the tractor was pulling at the same time that this leak happened.