Yeah man, i was shocked when i looked into the tuning spreadsheet and so many people out west are running the much smaller sized jets. I didn't think that the altitude awould make that big of a difference, I did the air density calcs and it shouldn't be that much, as well as looked at the mikuni hand tuner card calculator deal, and that didn't say the size was that big either.
Even when my portmap was bone stock it liked a big jet. i can assure you i don't have any air leaks, it might be this florida humidity like you've said. maybe i'm missing out on bunch more speed because i'm too rich, but i'm not so sure.