Hi , am a sub dealer in southern Ireland , having trouble with a sharp clutch, have calibrated clutch pedal, f/r lever, power shifts , etc all to no avail, any pointers out there , it happens in all gears in forward and reverse , it will make tractor jump when u push pedal down for a second time and release about 1 inch, if u hit the dump valve at end of pedal stroke tractor behaves ok