Aesthetix Janus Sig: Noisy Phono Tubes

Greetings fellow audiophiles. My Janus Sig produces a lot of white noise in the Phonostage. The manual suggests this is caused by noisy tubes. I’ve been trying to contact Aesthetix, but to no avail. They are in Moorpark, CA, and I fear they may have fallen victim to the wildfires.

The phono section uses quad 12AX7LP (long plate), 2 12AX7 and 2 6922 or equivalent. Does anyone have a recommendation on the best tubes for this unit? Thank you -David