[wilf]

Tony, assuming that your clutch is indeed now disengaging properly, there could be several reasons for your problem, I can think of:

1/ Synchro badly worn in your box (unlikely to show up on more than one gear unless it's totally worn out)
2/ Bent or worn selector forks
3/ Grade of oil in the box incorrect
4/ Incorrect alignment of bellhousing to block
5/ Severe wear in the selector assembly
6/ A long shot - wear in the input shaft main bearing? Not sure if this would show up the symptoms you describe


Only one of the above is a quick fix (oil), let's see if anyone else can come up with any other quick checks to make.

Does the problem go away or get worse once the 'box is warmed through? Could you see any "lost motion" in the selector assembly - i.e. can you move the stick without corresponding motion of the selector rods?

HTH

Wilf