Hi! My Mesa M-Pulse 360, which I bought used a few months ago, suddenly smelt today... anyways, I opened it up and... black stains on the transformer. DAMN!!!!! Am I screwed? the amp still works.. but. The thing didn't smell when I bought it, and I have always been careful to connect a load! What should I do? I don't have the originial receipt, and am in Canada. Will Mesa honor the warranty? Or does the warranty even apply?