I just picked up a Benelli M1 Super 90 14" SBS. LEO Trade in from somewhere for $400, looks new. Anyway. What do I need to know about these shotguns? Tips and Tricks? Any upgrade suggestions? I hear they are super fast but picky. I only plan on running Federal Flight Control Buck and Brenneke Slugs through it. I would like to get a older style Surefire for it... Any issues?