I dunno what is up with my SVT. I came in for practice one day, and the volume was just incredibly low. I checked the bias lights, and when I play, they all flicker, all three (or is it two? red and green?). I've had to practice with it a few times because it's all I've had, but sometimes it's a little louder, but not by much. I have to crank it pretty high to be heard at practice... which was never an issue before. I realize I'll probably have to take it to a tech, but they're so expensive around here, and far away... any ideas what the issue could be?