Right after completing the 50 service I started getting lots of hydraulic pump noise. Used the Shell Rotella heavy duty tractor fluid and topped off to the middle of the dipstick. Now at 65 hours the pump makes a loaded noise when the tractor idles when warm until you move the loader at least an inch then the noise goes away until the pressure builds up again. Sometimes there is no noise, but the engine seems to load a little then the tractor will rock a little bit and returns to normal idle. Discussed it with the dealer and it seems as if a relief valve is sticking. Long drive to the nearest dealer and wondering if anyone else has experience these issues. Thank you upfront for any insights!