Hi everyone, My Mossberg 500 just decided to stop feeding ammo. What the heck? I bought it last year...fired 50+ rounds through it over the year with never a problem until today. I took it apart and noticed a gouge in one of the extractor arms (sorry, no time to look up the part name). I lightly rubbed the gouge smooth with a filing stone, then took some Mothers polish to all moving parts (just in case). Still no luck. Any thoughts? Thanks in advance.