490e pvc

We're getting a monsoon here in the Shenandoah Valley which has given me a chance to sort out the last few issues on my 490E. I have replaced the engine controller,PVC,machine wiring harness,angle sensor and swing brake solenoid. Everything works except the arm which travels very slow. Pilot pressure is good. I put the PVC from a working 490E on it and the arm works as it should but it won't swing at all. I put the PVC on the other machine and the arm is slow there as well. When I put the PVC back on that machine it works as it should. Any help with what I should try next? Thanks in advance Joey