As always.- first the usual Caveat that it can be hard to diagnose a patient not in the office, and not having gun-in-hand...
I have lost track,over the years, of the production simplying Italian changes to the "Sharps system" in terms of them having eliminateds the floating gas check/breech block face, and the use of the floating tube style chamber "gas check." Or when, they went back.
So, i'll start out with three quick ones, and backwards:
1. Floating Tube Chamber system. Depending on the workmanship or level of QC, the tube can be loose, tight, or frozen in place. I have know guns where it was a bugger to get it out, and I have known lads with the opposite problem of epoxying it into the chamber.
2. Some lads have had their breech block face with the Italian cast-in place version of a non-functional block gas check milled down so an actual breech blockcheck could be installed.
3. Wear and tear of the breech, breech block, AND the floating Sharps gas seal can sometimes be reversed by adding shim stock "plate" between the two. That "snugs" down the fit of the plate to the breech and reduces or nearly eliminates (after all it is a Sharps) escaped gas/flash.
In gleichem Schritt und Tritt, Curt Schmidt
Not a real Civil War reenactor, I only portray one on boards and fora.
I do not portray a Civil War soldier, I merely interpret one.