Wow! 4 posts and you have this place completely figured out! Amazing!
Sorry to inform you but the elders of this forum ARE the authority of this platform. They have probably fixed and got functioning more 308 sized ARs than most manufacturers. Especially since the manufacturers prove time and time again that they often have no clue how to get these things to work all the time every time. These guys fix rifles over the internet using techniques they've learned spending their own time and money, over the course of years, and they do it for free! All that is asked is that the person asking for help LISTENS to the advice, and doesn't insist they know better. THEY DON'T!
The guys that listen, heed the advice and put it into practice get their malfunctioning rifles working and they end up being happy, and hopefully they learned something along the way. Then a lot of them decide to stick around because this place is way more than a gun forum, its a community.