Clutch\gear Change Problem

[Skyl1n33]

Hey guys, I hope someone can help me with my issue.

A few days ago i was stranded in my skyline. I could not change into any gears so i had to call rac to tow me. They guy who looked at it said that my clutch is broken (pressure plate and clutch plate according to him). Now a few days later i just thought id start up my car and suddenly I could shift into all gears incl. reverse. First gear felt a bit crunchy but I could shift. A similar thing happened a few weeks ago, just that it was really hard to shift into gears, but after a few hours it was smooth again. I checked the fluids and they both were a bit over max.

Now I have an appointment at my mechanic on friday to replace a clutch, but I am worried now that it is something else, since I already have bought the new clutch.Also when i bought the car i got it checked out by my mechanic and he said that the thrust bearing would probably need to be replaced soon, could that have something to do with it?

I hope someone can help me

Thanks

[GTSBoy]

It's probably hydraulic.