I have a Gibson SG Standard and I've been using the Helix floor model for a couple years now. I really enjoy the unit and the flexibility/convenience it provides. But I have one issue...I CANNOT get my tone dialed in with my SG. It always sounds thin and fuzzy or to woofy and dark. I am going for a John Mayer style tone (it doesn't need to be an exact replica by any means, just ballpark) and I've spent hours working on this thing and just can't get a good tone. Are any other SG owners having this issue or do I need to do more configuring with the board?