I just replaced a leaking slave cyl with a new slave cyl, properly bled, and the engagement point is the same.
I'm going to replace the plastic line with something solid.
I will look at the pivot pins,but there is no appreciable slop in the movement. It is also a PIA to get to things with the AC lines down there.
This doesn't affect the roadworthiness of the Stag, so it might have to wait until I can get the TR3 out of my only operating bay.
I can't imagine how much money I will spend if it turns out to be the taper pin on the shaft. I don't want to pull the tranny any more times than I have to, so while it's out, I can spend money on the clutch, the synchros etc.