Question about quench

Well looks like I was wrong on my compression number. I must of fat Fingerd a number. Lol useing the Wallace racing culator. Useing a fel pro 1008 that is .039 compressed It shows 11.07 compression. Now if i put in a cometic gasket .027 my compression is 11.43
So I don't know how I got 12.1 compression. Lol