Anyone done it? I know Eurotubes says it's fine but I'd like to have someone who's used this set up to tell me how it sounds... I've heard the biasing can only be like 30mv max for these tubes in the Deville, where as in the Deluxe they can go up to 40mv. Didn't know if this took the warmth out of the amp or what. I was looking to lower the output a little bit using the 6V6s, and the thing needs new tubes anyways so.. Any opinions are appreciated! Thanks!