Hi all...first post here. Seems like a great place for no BS commentary and advice. My issue may not be one at all, but I have to know. I recently had an m16 extractor installed on a .308 win rem 700. It started as a .308 and remains a .308 so no bolt face diameter change. The gunsmith/machinist simply installed the new extractor without making or installing the filler bushing. the extractor has a bevel or chamfer at the front so no need to open up the barrel for clearance and looks like he did a nice job of it. Works and ejects flawless but my concern is the slot the original ejector sat is still present and a round placed in the bolt while removed from the rifle has quite a bit of wiggle room/clearance. Contacted him as soon as I noticed this and he says that unless he's opening up the diameter for a larger caliber he does not do the filler bushing. Is this a normal process or should I have him install the bushing?