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    Archon 25 EL34 bias question?

    My archon had 5881's that were both dead on 30mV. I just put in some new Mullard El34's and after adjusting, the bias pot is maxed. One tube shows 27.6 mV and the other, 24.7mV. Is this a huge deal being that they are supposed to be 30mV? This is my first tube amp I've had to bias and I'm not...