[R-390] Tube Swapping in IF Deck

[Barry Scott]

I seem to recall a post many years ago from Roger Ruszkowski regarding
swapping tubes in the IF and/or RF deck to get the best performance.
I think he suggested swapping specific pairs and moving through the
deck that way but I don't quite remember the process.

There's a post in the Pearls dated Fri, 1 Apr 2005 23:37:52 EST from
Roger that touches on this but I'm not sure that's what I'm thinking
of.  I may be thinking of just a process for the RF deck's mixers and
not the IF deck but, again, the memory is distant.

Anyone know what I'm talking about and, possibly, familiar with that process?

Thanks,
Barry - N4BUQ