Not an unusual problem for the be Bersa 380. It has extremely tight tolerances in that are, and are seldom a problem big enough to have addressed by a gunsmith. Took me several sessions of watching a movie or some rare TV program to get mine broke in a few years back. Get a good Teflon Lube and continue to work the decocker putting a drop of lube on it ever 25 or so cycles of working it.