I bought a new Browning Citori XS sporting O/U in 12 gauge today. I pulled it out of the box, wiped it down, put it together, dropped a couple of snap caps in and pulled the trigger. The gun will fire the first barrel selected either under or over just fine but will not fire the second barrel unless I cycle the safety on and off. Any Ideas on this. I have not fired a live round out of it yet. I have never seen this in any other O/U.