Guys, both systems are hydraulic. That's why there are reservoirs at the front firewall in front of each pedal filled with brake fluid.
The only way to lighten the clutch pedal is to change to a different clutch. I did lube all the pivots for the clutch pedal on my 91 D. There is quite a bit of bracketry under the dash. More so than a regular car because the clutch master is inboard of the brake master instead of right behind the clutch pedal. I mean really soak them with a good lube. I used engine assemly lube because it stays where you put it. It helped considerably.