I recently purchased a Browning Citori CXS 20 ga. and have experienced a half dozen or so "fail to fire" on the second shot; most recently yesterday while pheasant hunting with it. All previous fails were on sporting clays ranges and I attributed it to the light target ammo but yesterday I was using 1oz. steel field loads. Is this a common issue with newer Citoris and is there a known fix? I've had a Citori 20 ga. early '90's era Field Grade for more than 25 years and have never had a problem with that gun.