Have a 584 that will not raise the three point all the way and the hydraulics hammer when using the remotes or raising the loader. The hitch will lower all the way if i put the draft control in any position other than heavy and lower the position lever. if i raise the position lever the hitch will go about 1/4 or 1/3 of the way. Then, if i move the draft control to heavy it will raise to about half way and no more. The position control does nothing with the draft control lever in heavy, the hitch will just stay in the halfway position. The amount of weight on the hitch doesn't make a difference, tried it with the mower and without and i bounced on the arms with the mower attached and it didn't budge. I changed the fluid filter and removed and cleaned the priority valve and nothing has changed. Any idears? Thanks!