I have a had this tractor for a couple years (second owner, ~200 hours on it) and recently this summer the shifting has occasionally been hard to move between gears (usually from fwd gears to N or R) but now is very hard to move between any gears. I had to replace brake pucks recently so had the wheel off, and could inspect parts closer. Everything looked to be in working order with the shifter/linkage and when the clutch was depressed the drive belt did not appear to be applying any pressure to the drive pulley. I removed the shift lever assembly from the shaft that enters the transmission case (shifter moved with no issue, so all linkage between is good/mobile) and it was similarly difficult to work the gears by working the bracket attached to the shaft. It seems like it is an issue inside of the case. I applied some WD40 to the shaft and it did seem to loosen up a bit, but still difficult to move through the gear sequence. Is it time to split the case and inspect closer or does anyone have other recommendations to try?