new power tubes for 2ch Trip Rec

[clicheinsorts]

So I just bought some new 6L6s for my older 2ch Triple Rec (i think it's late 90s / early 00s). I want to make a fresh start, so I bought 3 duets of matched pairs: 2 are rated Yel, 1 rated Gry. Is this going to be ok? Also.....I looked through my manual and online and didn't see anywhere about the setup of the tubes. I'm assuming (because the DR is that way) it's : XYZZYX, but again...not sure.

Any help/suggestions would be awesome.

Thanks