WOT I like 12.0 to just under 13.0, you might want to go up on mains a bit.
The 14:1 idle is perfect, but low speed cruise is WAY too rich. Don't know 100% what to change to fix that. I'll do a little research. I'm thinking you may want to go leaner/smaller on idle jets a little, to a 52.5 or even a 50.
I think John Connolly at aircooled.net jets them lean as heck, then opens the idle volume(that's what they are, they don't adjust the mixture, idle jets do that) screws a half-turn.