Hi BB,

Yep I've had a few stuck keys,when you give them a sharp blow on the end it just damages the end of the key
until there's no end to get a punch or chisel onto and then the side cutters cut the sides out trying to lever the
key out and then there are the keys that have broken flush with the keyway and hitting the key on each end does
nothing to move the key.

Most times the keys are removed easily it's just some keys won't move no matter how hard you hammer them
with a pin punch or chisel.

Cheers
Max.