All I did was remove and then reinstall the thumb piece on my K frame, and now all of a sudden, the cylinder releases with great difficulty. Don't believe it's an ejector rod problem, as I've never shot it and it was fine before I removed the thumb piece. Any ideas?
Took it off, and carefully put it back on. Was not cross threaded, but evidently I did not have it completely flush with the frame all the way around, as it works much better now.