There wouldn't be a problem with ugly Townies if you just make your own! LOL
Okay, so it takes some time and effort, but in the long run the results are so much more pleasing.
I don't think you can really think of the gender odds like saying, "86% of the time I end up with one particular gender" because the reality is it's just like flipping a coin. Every time a baby is born, there's a 50/50 chance of gender.
My fool-proof gender picker is simply to reload before mom has the baby and if it's not the gender I'm after, I re-load without saving. It works every time.