[Rawkkrawler]

Thanks for the comments.

The 2lb blue residual valve is in line and does not seem to be allowing too much pressure on the throw out bearing or fork.

To narrow it down a little, heat has played no part in the issue. If I sit in the driveway without moving I can simulate the clutch fade. All I have to do is tap the clutch pedal, It doesn't need to be depressed at all. With the tip of my foot just tap it allowing the spring to bounce it back I lose the pressure. If I do this 3 times I have no pedal. If I pump it fully to the floor 3-4 times, the pressure comes back.

At rest, the pedal does not lose pressure.

Today I lengthened the pushrod to the MC to add some tension, now the pedal holds pressure. This seems wrong to me. It is the equivilant to me resting my foot lightly on the pedal. It des not appear to be moving the clutch fork at all, but still seems like the wrong way to fix the problem.