Well, well.
I have taken the slave off the box and clutch fork covers off. It is definitely something inside as the first thing I noticed the the minimal gap between the back of the fork and the gear box house. I would say 4mm. This would not allow an inch travel when the cluch is depressed. I had a look inside to the best of my ability and I don't think the folk is bent when comparing it to another I have.
When I replaced the clutch I also replaced the throwout bearing. I have a hunch that this may be the problem as I have a feeling reading about differences in these. Anyway it is only conjecture as I will need to remove the engine to investigate anyway.
Have a ripper. Cheers Rod