Thanks for asking, Ted. I took the breech block off and fiddled with it a bit. I can see the flat of the cross bolt and where the safety spring should ride--it's not that far off, but I couldn't get enough purchase on the opposite end of the bolt to get it to rotate. I'll call Kirk on Monday and see if he'll take it on. A general strip/clean/lube/checkup seems like a good idea anyway.

Meanwhile, I seem to have caught a case of double-gun acquisitive disorder from hanging around places like this too much. I'm awaiting shipment of a 16-gauge Manufrance Robust 202. It's the plainest model Robust but looks to be in remarkable shape and weighs 5.75 pounds with 70-cm barrels (SK1 & M) and 70-mm chambers. I'll post some pics and other details in a new topic.

Thanks again to all who replied regarding the Darne. Will let you know how it goes. Meanwhile, it works just fine for skeet!
Bill