Been thinking about upgrading my 870 express not for anything that has gone wrong just because really. Changing out the extractor for a volquartsen exact edge extractor and the follower for the stainless steel ptg. I haven't had any issue with my gun extracting (I've had the gun for about 6 years or so) although I had one issue with Hevi shot hevi metal shells I had one stick while shooting at a duck but other than no issues. Anybody have any experience with these upgrades? or should I just not worry about an issue possibly happening and spend the money on more shells? I have read a few reviews stating that the extractor can cause wear on the receiver as well as the follower since they are steel although I can't imagine that being that common or something that could happen.