Hi, I'm fairly new to using the X18. I thought it was pretty straight forward, but obviously not since I'm posting on here. Anyway here's the basic run down. I'm a drummer and I have my X18 running the mics to my set. I have my phone playing music through the RCA inputs. On the Main Outs, it's connected to a PA system. On the AUX Sends it's sent to in ear monitors. I want to be able to send just the music through the PA system, and in the in ears both the music and what the mics are picking up. So here is where the problem comes up. I have all the drum mics faders on the MAIN set to negative infinity. Then on the BUS 1, I have the mic faders set to what I need for the in ears. When I have these faders (the ones on BUS 1) turned up, it starts playing in the in ears (as you would expect), but then it also starts playing on the MAIN outs (aka the PA systems) even though the mic faders for MAIN are set to -inf and then causes feedback. Any help/ suggestions would be appreaciated!