Rusty,
What's your take on sealing up (or not) the little bleed holes in the butterflies when used on a slant 6? According to the article at the slant 6 site, that is strictly a "318 thing" and those need to be sealed shut or the butterflies replaced with ones that don't have that little hole in them when used in a /6.
I cheated on my son's, and put a small smear of JB over the butterflies on that carb. If I wind up closing them up on the BBD that is going on mine I'll probably go with a quick zap with the MIG.