ok heres my 2 cents on this. I had the same prob. First i found out about this on my skeet team two years ago. I wasnt elevated on the stock enough and i was missing birds. I went to sportsmans warehouse and picked up a deal with a bunch of different types/ sizes of foam with a neopream type cover. the foam sits on the stock and you pull the neopream over and your set. I have also taken an elastic shell holder, and put/ cut to fit foam in that and it has worked wonders for me. i think that is one of the main things with these little guns is to be as consistant as possible and if you dont rest your cheek the same every time it will show on the paper. Try it out. its worked on 2 of my nefs and one of my shotguns.