Uneven balance

Due to room accoustics my right speaker is louder in my listening position than the left, I use the balance, would prefer a better room but the balance works.

I'd suggest following Davt's lead and look at your room configuration. Asymmetry can be a problem, especially with speakers that have a wide dispersion in rooms where the primary reflection points are different from the left side to the right. That can really skew the stereo image.

If that's the source of your problem it can often be improved by experimenting with speaker placement in the room and acoustic treatments.

Have those new tubes tested with a tube tester(unless they were already tested/matched to begin with). The transconductance of your tubes for the right and left channels in your preamp and/or amp might indicate a considerable difference or mismatch. If this is the case it might explain the difference in perceived output you hear between the right and left channels. This is not an uncommon occurence.

I agree with Opus88.
Check your bias settings. If there off due to re-tubing, it will cause the ballance to be off.