Buckeye921

I recently purchased a GG&G single point attatchment point for my M1 S90. It mounts between the reciever and the stock. Problem is the mount makes a nice gap between the trigger guard and the pistol grip. Any way to machine the stock to cut back an area for the mount so that the stock will be flush again?? Anyone else had this problem and solved it or do I shut up and deal with the 1/8 gap. Thanks

Will Benelli part number 60015, pistol grip stock, fit a super 90?