Just had a friend bring me an amp he picked up recently to have a look. Said it didn’t sound great. I’ve built a few Tweed clones and repaired some solid state amps. But I was pretty excited and a little shocked to see a completely untouched AB165 Bassman. I haven’t plugged it in yet, I immediately ordered a set of Electrolytic caps and a new matched pair of 6L6s. (Current powers tubes are different brand and style). While waiting for the caps, I was looking it over and noticed “warts” on the current caps. Are these normal or are they breaking down? Anyone seen these before?