I'm glad the new tubes worked out for you. It's always fun when a new pair of tubes gets it just right and a big disappointment when they don't work out. I just bought a pair of Raytheon Black Plate and Tung Sol Black Plate 6CG7's from the 1950's that I have been searching for over the past 2 years. Both tubes have a nice warm if not slightly darker sound with really smooth treble that I have been looking for, the best sounding 6CG7's I have found. And at a great price of $40 and $50 pr.