Hey everyone,
I switched out the 6L6s for EL34s, and changed the following preamp tubes:
V1 - Mesa SPAX7
V3 - Mesa SPAX7
V7 - JJECC803 (matched & balanced triodes)
However, now Channel 2's volume is much louder than Channel 3 (at the same setting; i.e., each channel volume set to 1:00...