Hello, I have a CZ Drake in 28 gauge bought it brand new, I have shot it 100 times, in that time both barrels have gone off with one pull of the trigger , its bang bang not both at the same time, I called CZ after it done it for the 7 time and he said I might not be holding it tight to my shoulder, and it might be doing like that stock you put on ARs where the recoil is causing it, so I have held it tighter and let a buddy shoot it also, it still does it every now and then, is it me or does the gun have a problem, has anyone else had this problem. Thanks for any help.