Recently had my FN Cerakoted and when I shot it for the first time it would fail to eject. Some at the range to include the gunsmith that did the cerakote said it was just because of the 112 degree day. Went home and tried it in the AC no go once again. Is it possible if the "gunsmith" cerakoted the chamber would that effect. Anyone have this problem once they received their rifles back. Any ideas of what could cause this would be great.