clutch disc not releasing help!!

What brand is your clutch and pressure plate? Where was it made?
I went thru the same thing 2 years ago with a Zoom set up.

Had the transmission out 5 times, their techs on the phone, finally the tech said just return it, defective pressure plate.
It was within tolerance on every part, but the stack up of loose tolerance made it in-operable.

Exchanged it for a Center force and no problems.