I've driven manuals since 1973 (yeah, I'm old) and the Z was the most challenging to drive smooth. The lighter spring helped, but I still wasn't 100% satisfied. I bought the RJM adjustable clutch pedal assembly and was going to install it. However, after driving the car for over two years, I have become "one" with the clutch, so now all is good. It just takes some patience and mostly practice. I never did install the clutch pedal that I bought, so I need to unload it.
I do think that driving the "Dragon" for the last two years
really helped to get my comfort level to where it is now.