Stop in for a cup of coffee
Spewing out the carb bowl vent is usually dirt in the needle and seat preventing a good seal. Sometimes it will work itself out or you can bang on the top of the carb to break it loose.
In Chuck's case, he bought a carb from another member and put a "kit" in it, but didn't bother to replace the needle and seat which turned out to be bad. We replaced it with a new one and it stopped spurting...