I have a b2630 that is driving me mad. The hydraulics just aren't cutting it. They work when they feel like it, and will stop working at any time. That includes the hst drive and the bucket operation. There is jerky motion in the bucket as well. All the backseat mechanics told me to change the hydraulic fluid, so I did, but it made no difference. As of today it's parked until I can figure this out. It only has 435 hours, but all I can figure is the pump is junk. I don't want to spend a grand on that only to find out I was wrong though. When I am trying to use the drive it is also pushing back on the pedal. Actually broke the hst bar and had to replace it. What am I overlooking? Thank you.