I know this is going to be a long shot, but hopefully someone has dealt w/ this already. I ordered a MMC Armory complete upper in Glock 9mm w/ a Lakota Ops BCG from Delta Team Tactical. I remember reading something on the website that needed to be adjusted/broke in. Now here comes the fun part, "something" needed to be loosened and tension tightened. You then charge it by 1/4 a few times, it seats the "something" and you tighten it down and are good to go. I believe it had something to do w/ the extractor?? Anyway, DTT is now sold out of the upper, so I can't find any info on it. HELP!!!