...Bank B on mine is fading and occassionally cutting out.... it's always plugged into my pedal board. It's a huge hassle because I don't have a 2-3 week window to send it to Tech 21 for repair. I have multiple gigs a week. I was told to maybe spray some contact cleaner into the "A" input and plug and unplug repeatedly a number of times.... "lucky VT".... ..... any advice on what I should do if it doesn't work out? I use both banks alot with different basses and like the functionality of it. If I have to send it in for repair, I am just gonna buy something different.