Race guns can be adjusted to fit the shooter, but who uses adjustable butt pads, cheek pieces etc on there field air rifles.
Factory stocks are designed to fit the average size person, me being 6ft plus with long arms I could never get comfortable with my rifles and only the bottom 3rd of the butt pad ever touched my shoulder.
With this in mind two months age I fitted a adjustable butt pad to my 97k, and the difference was a'mazing, when I shoulder the rifle my eye falls directly onto the scope without any moving around and the stock seems to fit like a glove. I've also seen a inprovement in my SFT scores since fitting the butt pad. Yesterday I fitted a second adjustable pad to my S400 with the same results.
So if you don't fall into that mr average size mould you may also benefit by fitting a adjustable pad, they are very easy to install, just takes a bit of filing and polishing to get a neat fit.