Ok about fed up with the 341. Pilot, main, swing all pressures check out good actually a little high. Swing still very weak and slow. If you move the travel while swinging you can hear the pump stroke ans swing picks up some. Not the valve on the swing motor but the little 4x4pool one beside it(the one your swing brake line comes from) is also squilling loudly from time to time. Also you can feel like a pulsing in your swing control lever when swinging. Please any ideas at all. Dads a 33 year komatsu mechanic and is as fed up as i am.