1970 powershift 4020 3 point Issues

Having troubles with 3 point being under a load at all times, with empty arms except when arms all the way up. The Hydraulic pump pressure is at 2250 psi.
Recently installed a 4430 pump and right remote valve. Never any problem before pump being changed and adding valve. Pump was out of our own 4430 that never had issues before. Any ideas would be appreciated. Its easier for me to talk to someone in person, than work over the computer.
In Iowa
Cell-563-357-2655
 

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