I was wondering if some of you seasoned mark IV users might want to share some of your settings. I play in a 5 peice rock cover/original band. I have a mark iv wide body combo on top of a thiele. I use minimal effects and a bb preamp in front of my clean and crunch channels. I like my tone but it seems to lack a little balls. My power section is all sed winged c 6l6's. Preamp section is as follows from 1 to 5. Tung sol, jj high gain, svetlana, svetlana, elecrto harmonix. I use my eq all of the time in a slight classic v. Suggestion would be much appreciated. Oh ya, the band is a five peice, I play lead and our rhythm guy plays an express 5:50.