I get the idea Stickmangumby, however ive not had the same luck you have...
I dont use any of the preset models since i dont paticually like any of them, my "D" channel patch is the gain around the 7 mark, with bass on about 5, mids on about 3 and treble on about 7, the channel volume is on 8, with no effects and only slight reverb (2 at most)
However on both my BC rich which has 2 humbuckers or my cruiser with H/S/H config, i cant get any real feedback from it,
I think ill go with the new theory which is get a pedal infront of the Line 6 and force it to feedback wether it likes it or not
If its anyhelp, i havent got the noise gate enabled on the amp (seen no need to as of yet)
~~ TS ~~