Oops missed this first post of yours.
The legion screws are a different profile than regular sig screws. I found out the hard way
I was going off of Sig's website and when I didn't see them under the parts picker (https://www.sigsauer.com/sig-sauer-small-parts-shoppers/p229-parts-picker/), so I did a search for them and found that other link.They use a G10 grip. The pocket depth in the g10 is more shallow than the other grips they use so the screw heads will stick up higher than they are supposed to.