I have the Torii Mk3 and having unbalanced sound. The left channel is louder than the right channel and the balance is uneven. Here is what I have done to no avail:

1) Switched all of the tubes from the left to the right side one-by-one. Didn't help.
2) Made sure that the ohms are set equally. Both switches are forward.
3) Switched the speaker cables. When I do this, then the right speaker becomes louder because it is in the left post.
4) If I switch the sources RCA cables, then the right speaker becomes louder because it is now on the left side input jack.
5) The treble and bass knobs are set equally too.
Actually when I play a mono tune, the sound is also louder on the left side.
The right channel just doesn't seem to provide the appropriate power as the left and lags behind.
Any suggestions are appreciated.
Thanks