I can't access the TV-7 now (buried), but found notes for my 539C (sold some time ago) and was setting bias @ 24 for 6922.
What does your 750 tube chart show for 6dj8 and 6922 bias?
Anyway, don't sweat the Euro VS USA settings as they should be the same, though there is something slightly different about real CCA's, but I do not recall what as I only had a handful and this was 20 years ago.
DeKay