Right, I've had no end of issues with my gearbox not wanting to go into gear, loud whining noises, 3rd gear sometimes grating.
So I've had the box out, replaced the entire gearset, every bearing, every seal and every gasket.

Still grating in 3rd gear, whining in 2nd gear, no synchro from 2nd to 1st and once you put it in reverse it wont come out again whilst the engine is running?!?
I'm at the end of my patience after having this gearbox out and in 3 times and spending an entire bank holiday trying to sort it only for it to turn out worse.

So the only thing I can think now, is the case nackered? or could the diff be causing these issues? because they are the only two parts that haven't been changed.
Failing that I'm seriously debating breaking the car as I'm losing interest because of this on going issue.