Purchased a case 1494 last fall and have been fighting the 3 point system ever since, when the selector is in draft position they seem to work as they should but the minute you select position the arms go straight up and hold there where you can hear the pump maxing out as if a relief valve is not opening. Have replaced all fluid and filters not sure if tearing into the selector part is a pain or manageable. Any help would be greatly appreciated at this point.