a friend of mine is using Logic 9 Dual tracking guitars and by the photograph we can't seem to figure out why the levels are different, it's apparent when using headphones. He's using Maudio Profire 610 on Macbook Pro and all the levels are the same on both channels...I'm scratching my head on this one....anybody? *Even when I pan the channels one sounds like it has more bass and thats just panning one channel rather than both