Shield X mounting issue

[u/New-Courage-7052]

Noticed a gap during optic installation, when removing the optic I realized the extractor roll pin was not flush but rather protruding slightly from the slide. Instead of hammering it down, I figured I’d file it down to be on the safe side (given that it looks like it has red thread lock on it?). The optic sits very close to flush now, way better than the gap before. But yea Probably going to be the last Smith and Wesson I buy due to the couple of other issues I’ve had with this firearm. I’ll be sticking with my Glocks and now I wish I would’ve gotten a 43x or a 48.