Hi Dave, my own thoughts too on the clutch. Found a slight leak on master cylinder so ordered new master and slave (to be safe). After a long wait for parts to arrive from Germany (don't order from Autodoc if you're in a hurry) along with various other service bits, fitted those. Then ran into next problem - system wouldn't bleed properly. Tried everything including pressure bleeder but all I would get was "hard pedal" too early and would not go to the floor. After thinking that maybe I had got a duff new master cylinder or a blocked line, decided to dismantle the master end of the system. Whilst doing this found that I had not properly located the pin which connects the pedal to master cylinder (it is difficult to see what you're doing up there). Anyway, pin properly in place system bled ok.
Improved the bite point a bit so had a look in the trusty Haynes manual (one of my first purchases) and found that you can adjust the pedal height (from the floor) - this was already at the correct height. You can also adjust the pedal freeplay - this is just how much slack you allow at the top of pedal travel (should be 12-21mm) before you start to move the piston in master cylinder - again, freeplay was already ok.
In terms of adjusting the bite point, not much you can do on that. Its a combination of the two adjustments above and the adjuster bolts can only be moved by a max of about 2cm so doesn't have much effect on bite point.
So, maybe my clutch plate is on the way out (?) but its ok for now.
Rust - ah well - that's another story ! More later......