[Inrevinc]

I started to experience a sticky clutch pedal issue with the car on the track, only happens at the end of the track day (last 2 sessions). Starts once the car is warm after 2-3 laps in those sessions and gets progressively worse.

- I come into corner and brake/downshift.
- Gear engages fine, clutch pedal comes slighlty up above friction point but won't pop all the way back up.
- Will not do it when accelerating.
- So far I've done 32 track days with my car, this issue has only happened the last 4 days. It has happened to various degrees. Each time I've had the brakes and clutch bled hoping it wouldn't happen the next time. Complete flush of brake fluid done too.
- Used gulf 1000 and Super Blue and no change in behavior.
- Brake pedal is still firm, now that the car is cool the clutch works fine.

My guess is a bad slave or master cylinder. The problem is I can't reproduce it on the street and both dealer and indy shop tell me they find nothing wrong with hydraulics.

Any way I can reproduce it or test it so that I find out what it is?