Sometimes while cutting on a unlevel surfaces and turning, I'll hear a screeching noise that I think is coming from the Hydraulic units. It sounds as if they are low on oil but they are not, actually I overfilled the tank to see If it makes a difference, just to have it come out the vent. I guess it could be the trans belt or clutch, not sure, anyone else experience this? I'll assume it's not good to cause it but, what can I do except get straight and level asap. Less than 400hrs on a Scag Tiger Cub 48".