I have a M4030SU that a hydraulic hose blew out a few months ago. I replaced the hose, refilled the reservoir and everything was fine for a short time. Then it got harder and harder to steer. Now the wheel only turns about 5 deg or so either way. Is this a normal problem That is easily repaired? That tractor has a Bushhog Loader on it. Id hate to have to transfer that loader to the sister tractor I have, but can if I really need to.