clutch fork comes loose??
I guess I forgot to update this thread but I found the problem and it was a bent fork pivot.
it was bent enough to be a problem but not bent enough to be easily noticed until I put next to another one.
the car has been re-assembled with the good fork pivot and the problem was solved.
How the original clutch was bent?? No clue but I guess that comes with buying 40+ year old used parts from swap meets and here, there and all over.