Actually if there is no grinding occurring, my bet would be the clutch cable.
All too often the cable stretches and causes a progressively harder pedal effort which makes it harder to get into gear.
When the sycnros start to wear, the teeth on the blocking rings get rounded and lose their "pointed edge". When this happens, it starts grinding. A
tranny that is getting progressively harder to get into gear is
usually something in clutch.
Richard
Tech Support
Tremec TKO, T45 & T56 Transmission Systems
__________________
Self Proclaimed "Resident Manual
Tranny/Driveline Guru"
Obamacare my a$$ We are all going to pay for electing this tool.
Remember, it is almost impossible for anyone, myself included, to diagnose a problem over the internet without seeing the car. My advice is simply that, advice based on years of experience. I don't want you or anyone taking my word as gospel. I am trying to give some direction as to what I think may be happening.
Gear Shifting Problem 
