Hey guys and gals. Newbie here with a newb question. So, I'm building my first rifle and I've run into a bit of a problem: I drilled and tapped my lock bolts, only to find that my lock panel doesn't sit completely flush with the side of my barrel when I tighten the screws down. There's a slight gap along the top the the panel, enough that I'm afraid that pan powder will collect in and cause corrosion/ignite. Any and all advice is appreciated.