Any suggestions on how to remove a Zimmerman disc on a .91 CMB. First engine went smooth the second is being stubborn. Ive tried all my tricks lets here some of yours.
Try a tiny suction cup (like the ones you get at the drug store with a hook on it for hanging things on). After you get it out, you may want to clean up the square hole with some 400 paper so it doesn't bind on the crank pin.