A833 no shift

1....THERE CAN BE defective clutches. In my lifetime, I've run into THREE that I know of
2.....Pilot bushing interference
3.....Clutch not releasing, bent, broken, cracked, flexing linkage, wrong linkage causing leverage/ movement range issues.
4.....Disc issues, AKA in backwards oddball hub, etc.

You likely need two people, and access to the bottom of the bell with a feeler gauge so you can tell if the pp is releasing