2002 2500 4x4 clutch pedal gets soft after truck gets warm, original clutch, 105,000 miles, slave cyclinder was replaced around 55,000. clutch still grabs strong even when pedal gets soft. truck has programmer, exhaust, intake,injectors, inj. pump, lots of lift to clear the 40 inch tires. need to pull my tractor and bushhog about 400 miles and dont want clutch issues.