Is the carb designed to use E85? If not then you might not be able to get any more fuel thru the metering blocks. There are passages behind the jets that flow fuel and if those aren't large enough then it doesn't matter how big of a jet you put in it.

If the carb is designed for E85 but it has a fuel curve issue then going smaller on the main air bleed will add fuel at WOT. Fuel curve engineering is best done on a dyno with wide bands hooked up.......