So I notice there are some char/burn-like marks / rings that are forming on top of my tubes. Strangely enough, it seems to only be happening to one channel and not the other. Is this normal, or is there a problem that I can avoid?
Do people have these markings on their tubes too?
The power tube is developing a noticeable ring, whereas it looks like the driver tube is getting burned. How hot do these things normally run? I touched one of the driver tubes once, and I thought I had almost burned myself because it was so scalding hot. I did move the jumper to the EF92 position to test out another set of tubes, but moved them back to the EF95 position when i switched back, however, the jumper is in the correct place and all the way in.
