82xeesp

I have got a 07/93 eb2 with the T50D with the reverse brake. When I park it over night and then try to reverse out, I let the clutch out and it loads up but the car doesn't move as if the hand brake was stuck on. Then after about a second it releases and the car is away, I lifted the car up with no motor just driveline, and the wheels are free the hand brake isn't stuck on. The other thing is there is a clunk when changing gears pushing the clutch in and letting it out. When I had the car up I grabbed the input shaft and rotated it back and forth and there is only a slight bit of backlash through the driveline. When I was taking the engine out the, gearbox sepperated from the block then it got stuck it wouldnt come all the way out, it was very stiff and I had to wriggle the engine a lot to get the gearbox off. I was wondering could this be a out of alignment block or bellhousing? I'm all out of ideas to check and I'm not an expert on gearbox's. So I need any help I can get, I rang a gearbox joint, and all the guy wanted was for me to bring it down so they could have a look for a few days and wanted to charge even if they fixed nothing and I could still have the same problem. So any ideas, suggestions or help and information would be very appreciated.
Thanks Adam.