Steve, yeah, I biased the amp up. Man, the QR runs some high plate voltage, mine was running at about 505. I averaged the tubes to around 30 mA per tube.
So far, I'm liking the KT-77's. They really tamed down the aggressive mids that the QR has. Really made the amp sound more balanced. I'm going to leave them in there for while to see how I feel later on.