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I have a brand new super nova rifled slug with a 2-7 nikon prostaff scope, weaver medium rings and weaver 93a base, green loktight. I was at the range today trying to sight it in. On the 3rd shot, the scope poped off from the top of the gun. The 4 screws from the base just pulled out the top of the gun. I guess the screws were not long enough?? The weaver base package was factory sealed when I bought it. The screw holes on the top of the gun from what I can see may be damaged? Should I have a gunsmith try longer screws if possable or see if benelli says its under warranty.