Hello 195 welcome to YT! I know nothing about the specifics of an Oliver hydraulic system but just a question or two and comment based on general hydraulic application knowledge. In order to eliminate some questions about what is going on, if you put your test gauge into one remote and start the tractor and touch nothing the gauge will go to 1400? Or do you have to move the remote lever to get it to show the pressure? If you move the lever to pressure the opposite coupler of the pair does that drop the psi of the gauge off to zero or nearly? If it does not will stopping the engine and cycling the remote lever drop off the pressure? If not you have some kind of a quick coupler mismatch that is holding the pressure to the gauge. Are the remote valves you are talking about the original equipment valves or added on valves. The only thing I can think of is that if hoses are involved between the pump valves then what has possibly happened is you have plumbed pressure to the return side of the remote valve. Then to allow this to happen the valves were not designed to hold pressure back from the return side and are being pushed off their seats allowing the work ports to be pressurized.
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