I was pushing some snow with my 7100D loader with blade. Heavy stuff. Everything working great till the clutch pedal started to feel odd - like the load was the return spring not the pressure plates. Sure enough, after a few more engage/disengage cycles, it remained engaged and the gears would grind. Limped back to the shed. Adjusted the pedal stop so I could really depress it below the foot rest and it was bit better but tractor still creeps slightly when in gear and you try and start it. There was lots of pedal previously and never any slippage - in other words no gradual wear that would lead me to believe the clutch was wearing out. Does something need grease or am I in for and expensive split?