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Well, I haven't messed with this thing in a few weeks but I went back and checked everything and I can't find anything troublesome other than the 6SQ7 tubes. With the two original tubes installed, I get a loud buzz as I turn up the volume. When I switch out the one nearest the volume pot for a newer 6SQ7, it causes the static in the middle of the range. I only get static with that one tube and I get a buzz with the others.
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