re: Ordered a Palmetto State kit

quote:

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both of the edges were pretty sharp. I ended up very gently filing both edges and no issues since.

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Uhhhh. If that was the sear engagement surfaces, you really need to be careful. Those surfaces are supposed to be square. If you rounded them, which is what it sounds like you did, it can result in the gun firing when bumped and / or going full auto. Both bad. With AR's, if you get fire control parts that aren't acting right it is generally advised to just replace them. I would get some new parts in there if you removed metal from those surfaces.