Hi there, I have a question that i hope someone can help me with. I dont know whether there is more than one opinion on this but here goes. I want to know the correct way or hear some opinion about setting up a mic (main vocals) on the mixer. The way that I learned is to set the level/fader to 0 and turn up the gain until there is feedback, then dial the gain back a notch or two. From there, use the level to decrease or increase volume as needed. Is this correct? It seems wrong but i dont know. I have limited experience with running a pa.