Matched Tubes Quicksilver Line Pre

I just ordered a couple 12AT7’s for my Quicksilver Line Pre and I don’t believe I requested a matched pair. I emailed seller and asked him to make sure they were before USPS picked them up, but he did not respond.hmmmmmm

How important is this? Surely if I had remembered I would have requested it in the beginning. The fact that there is no bias adjustment tells me it is not an issue.

Any thoughts by someone WITH ACTUAL EXPERIENCE on this issue?

Thank you in advance,

TD