O' dear, o' deary me......... Same here. I went over and asked what on earth was going on - and on - and on... To be told that the initial problem was that during a barrel change with the original guns, the crunchies weren't setting the CHS correctly. The argument that a) they seemed to manage from 1925 until then and b) if they ain't doing it right, then teach them until they DO do it correctly fell on deaf ears. After all, it ain't difficult. I appreciate that there are gauges and all the rest of the stuiff but just screw the barrel in until the breech block fails to lock forwards. then unclick until the first full click that it DOES lock and then unclick a further TWO clicks and that it CHS! Fxxxxxg hell....., just how simple CAN it be?