I too have a slight hard spot at the beginning and I voluntarily left it for two reasons:
- there is no place to place your foot next to the pedal, it therefore often rests on the pedal and with "the hard point" you are certain not to engage the movement and not to put the bearing in contact with the clutch mechanism.
- we preserve the entire stroke of the master cylinder and therefore of the slave cylinder which is very important to properly disengage the clutch and preserve the synchronizations
For the brakes, I kept the original front calipers which are quite good but I replaced the weak rear calipers with four-piston calipers. I know that the rear calipers are now oversized compared to the front and so I removed the pressure limiter on the front circuit and installed an adjustable pressure limiter on the rear.
For the moment I kept the shuttle valve, it doesn't leak and it avoids having to tinker with a system for the rear brake lights. If one day it leaks, I will delete it.
