3300su model tractor. My loader valve for the bucket failed. The up and down side worked fine but the bucket tip portion started acting up and getting harder and harder to function properly. I hoped it was the linkage but not the case. The front valve moved freely with all the linkage removed but the rear valve was stuck big time. I ordered a new one as the tractor is out of warranty. 1100 bones for one of these items and I see there is a part number change. Anyone else have one of these fail or am I just the lucky fluke on this item?