DC meter on power amp

btw:  After you're well acquainted with the amp's presentation, listening to your favorite/most familiar, albums; get one of these and place it atop the power transformer.        Let me know your reaction, if you do.                                                                      I think you'll be surprised and delighted at the improvements it will make.      https://elusivedisc.com/vpi-magic-brick/      The old ones are prettier: https://www.hifishark.com/search?q=VPI+Magic+Bricks:

@rodman99999 i tried turning the screw on top of the 300B, they don’t change the readings.  But I can hear a louder hum if I turn them.

can you elaborate how would the sound be affected by this?  And more importantly, what should I do?  Like buy another tube, or take it to a tech to change the bias?  

Have you tried turning the tube that reads higher, down to match the other?           Given my unfamiliarity with your amp, and why those pots wouldn’t affect the B+; I’m hesitant to offer further advise.                                                                                                        Perhaps another AudiogoN denizen, can fill in for my ignorance.                                  Personally: I’d run that 300B pair, that read more closely matched, so as to enjoy the amp, until getting gaining further knowledge.                                                                               My suggestion would be: contact Soundgate for directions and information.                       My apologies, for not being able to offer better assistance.

@rodman99999 
No problem, thank you very much for your input.  

Here's hoping your solutions come quickly!