Yeah, I should contact Marshall about that. It's really frustrating. I figured it would be a cheap fix, but the "Certified" Marshall repair shop near here charges $35 to look at it, then $60/hour for repairs. That to me is RIDICULOUS!
I found a local guy here that builds and services vintage amps, he said he'd look at it for free and just charge me for parts because he likes my band. That's great, but I'm a little skeptical about it.