I have had my axe-fx 2 weeks, finally getting past noodling to set up for gigs. I want to connect my boss AC-3 acoustic simulator to the effects loop to move if from the floor to my rack, save as a preset with modeling and hit when needed while at a gig. I have followed the directions, but am getting no sound. When I add the effects loop, it kills the sound completely, when I click it off, the sound is back. I am 100% certain this is some type of user error on my part. I have to be missing something. Ideas?