I shot a Browning BSS Side-lock that I just bought for the first time this morning. After four shots the fore-end popped off and won't go back on. Hopefully it is just a snafu that will be solved by more familiarity with the gun, but this thread gives me a bad feeling. I'm looking hard at the bottom rib right now and see nothing wrong. I hope it just needs to be re-cocked or something...Geo