Im out of warranty by about 2 months. (I only have 312 hours on the machine) My right wheel is having problems. Ive read other threads with similar problems and have checked the bypass and belts. Today I changed the fluid and filter and purged the system. Nothing seems to help. When I go full out forward on flat ground everything is OK. In reverse things seem fine but when I turn with the right it make a squilling sound and has little power. When I put the machine up agianst a solid structure and go forward the left wheel will turn the right will not. If I do the same thing in reverse both sides turn fine, If I go up my trailer ramp slow sometimes it loses power and I have to back down and go up with a bigger run. I am 3.5 hours from the nearest dealer and capable of replacing parts. My question is: is the Hydro Pump or the wheel motor, my guess is the pump. Any suggestions would be helpful. Is there a test to know if it is the pump?Ive really liked this machine, but Ive put thousands of hours on Walkers and never a hydro problem. I hope this is something else and someone can recommend a solution and if not where can I get a replacement pump at the best price? J Thomas has them for $425 anyone know where I can get a rebuilt pump. Thanks for your time. BTW my Hustler is a Super Z.