[34fordy]

I have found that the lock cylinder will usually go into the drop a small amount further.
I have taken a socket that fits the outer part of the cylinder flat face, put a fiber washer under the socket and tap the cylinder maybe .010. inward. Then I hold the drop in my hand and smack the drop against a soft piece of wood. After a few raps the cylinder will go back to or farther than the original position. Sometimes I have been able to use a small drift in the brass pin hole that has been drilled out to gently pry the cylinder forth and back to start the loosening process. With patience and penetrate, numerous taps back in and smacks against the soft wood the cylinder will come out. I also use this method to remove a broken key that is in the off position. Patience and persistence are sometimes the best tools.