Vapor Coming From Front Vent

When all new cars went to fuel injection and a sealed fuel system (mid to late 80s), our 'friends' in the petroleum industry took the stabilizers that used to be in all gas out of it, and there goes the gas in your fuel bowl, out the vent. Add to that, the fact that ethanol evaporates more slowly than gas and you end up with hydrophilic (water attracting) ethanol at the bottom of the bowl and corrosion in your carb...