How about the release bearing tight on the bearing retainer due to heat? If you remove the last rod on the pedal linkage, does the fork move back and forth on the retainer? When it is hot.
A-Ok cold, I can even get a small wiggle out of the throw-out.....next step is with heat after a drive and while it is still "sticky" .Cannot imagine it could swell enough to cause an issue...but I have been wrong before (just ask my wife)
