I don't think anyone is trying to bash you, but if you want to help us out we'd have to know more about your engine set up and the particular size carb you're running. Otherwise the fact that one unknown size street avenger ran too rich on your mystery 408 isn't really all that useful. After all, I wouldn't be too surprised if an 870 street avenger ran too rich on a generic 408, but I might be a little surprised if a 670 street avenger did.