Keith, I've played a lot of Guardala's and have noticed that many of them have extremely long facings, especially in the first few measurements from the tip; this leads to less stability in the altissimo, (more "split tones", wanted or not), at least for me. The Super King's small chamber exacerbates the problem, IMO. BTW, is the piece Lazer-Trimmed or "hand made"? I've noticed the Super King LT's have a smaller chamber than the old Guardala's Super Kings......daryl