I have been fortunate to recently aquire this tractor. The previous owner had an issue with the three point not going down. I have used the tractor for a couple hours and the issue came back again. He took the valve apart and didn't find any debris or damage to the valve. I changed the hydraulic oil and filter...level was slightly low, but it still hasn't resumed. The three point is the lifitng mechanism for the belly mounted 60" mower deck. This tractor also has the mfwd and 70 loader. The performance for the rest of the hydraulics are simply amazing. Any thoughts. I have opened that valve all the way.