I was not going to do so but will ax again. Perhaps I have overlooked response.

What happens when going from neutral to either reverse or 1st gear, engine running.

Are you certain that clutch disc is not warped?

Still interested if clutch shaft pilot bushing or bearing is to tight or otherwise damaged.

Suppose it is possible that pressure plate not releasing equally about its entire perimeter,,,because of defective pressure plate, incorrect , improperly installed or damaged throw out bearing.

There was posting regarding clutch release linkage, has this all been resolved.

Adjust clutch to where no free play at all,,,,can you get into gear then?