Need pics bow filler cushion for V215

I had a bow filler cushion made for my Sanger v215 and I fear it may be missing something. It fits tightly between my existing bow seats, but sits on such a small lip of fiberglass that if you sit on the cushion it can push to either side by about 1/2 inch and it falls in…..hopefully this makes sense.

Looking for pictures of the bottom of your filler cushion if you have one so I can make sure I’m not missing anything.

Thanks!!!