Eh, I'd advise going much closer to the dustcap before you start upping the knobs; basically, I've found the best way is to put the mic around 50% on/50% off the dustcap (the specifics aren't too important at this point though), and then do all your tweaking with the amp settings, cuz it makes the real difference IMO! Having never played a 3-channel (or a Triple) I can't be certain that they behave similarly to mine, but I know I used to have the treble around where you do, but am much happier with it at ~11:30! (and the presence at 12, though again this is on my 2 ch. Dual) Was this the orange or red channel, btw?