Check out at3 Tactical video section on how to install. As far as adjusting it the side screw shouldn't be tightened down until you see a consistent ejection pattern between 3 to 4 o'clock range. When adjusting do not have your handguard installed so you can make your adjustments easily. Happy shooting.
I understand that many times it just comes down to one not having the tools or proper thread locking compound on hand, coupled with the unknown and not wanting to possibly screw something up. PM sent.