My 6sp has 90k and just recently started to be very hard to get in any gear without blipping the throttle & matching the gears perfectly. Pedal feels normal.
Was just told that its 1 of 2 things, either its low on transmission oil, or the pilot bearing is bad. Since I just changed the oil in the transmission last year, and I dont see any leaks, Im thinking its the pilot bearing. A common cause of pilot bearing premature wearing out (as in my case) I sit at lights & hold the clutch in. Thats when the pilot is being used.
Otherwise, this transmission shifted great after about 20-30k miles of break-in, and just all of a sudden changed.
Some people are saying that when the transmission oil gets 20k+ miles on it, they start getting hard to shift. I didnt see that, but some apparently are.
It could also be the hydraulics, not releasing the clutch enough.