Fox BSE-C

Alright gents, I got that 12ga in and it's in decent shape. It does have that dang black paint on the receiver which I can't wait to get rid of. I patterned it and it patterns pretty low, which is what it is. I unfortunately am having extraction/stuck case issues on the right barrel only. I disassembled the foreend, removed the extractors, cups, and springs. There's a few little burrs I'm going to clean off but after trying a few empty hulls, it seems like it didn't fix the problem. Any thoughts would be great, I've reached the end of the internet trying to find help and/or a new extractor with no luck.