Something on CH3 in Extreme mode with the bright switch on and the preset EQ maxxed out. Gain probably 3:00 or maybe a little lower with active pups. Treb: 1:30, Mid: 10:30, Bass: 11:00, Pres to taste.
Congrats on the new Mark V! I am still in awe of mine. Every channel is a keeper, and that's rare for a three channel amp.