Thanks, David. Good info as always. This has been occurring sporadically just with opening and closing the gun un-fired. Gun opens about a third or less, just enough to look down inside to see that the pins and the ejectors are hitting one another. A pocket knife blade can push the pins back into the breach face. Thought I'd see if there's an obvious issue before I go to a live round. I'll try the wood block and see what it does. I have an LC re-cocking tool. Presumably that will work to reset...Thanks for the assist.