Tube Bias question

Good morning everyone,
Recently I bought some new tubes for my Mac 240. 6l6 GC Tung Sol reissues. 
I had ordered the matched quad set. Issue was I only received two, made the dealer aware of the mistake and they did a great job of fixing the minor mistake. I received the remaining two yesterday. The concern I have is they are not a matched quad set. The first two had a matched bias of 44 or so, the next pair were matched at 53. Please excuse my ignorance as to what the translation is.
My question is this. I have read that the old Mac is not an amp that is sensitive to bias, or that it matters much. 
I was going to install one matched pair for each channel. Will this have a noticeable or negative effect on sound?
My system.
MoFi Ultra Deck 
Cambridge phono pre-amp
NAD pre amp and CD
MAC 240 amp (refurbished by Audio Classics Ryan. Awesome experience BTW)
Heresy iv
SVS PB 2000
Appreciate any feedback.

Thank you,
Doug