Do they need to be lapped? I just put a set on a burris short mag and it seemed they have an edge that scratched into the scope tube as I put them on. I haven't tightened them down yet. Is this normal, should I not worry about it, and just go ahead and mount the scope? It's getting mounted on a .223 rifle with a heavy barrel so recoil shouldn't be an issue. What do you think? Thanks. jammer