Fuel Blowing Out Carb Vent Tubes Under Heavy Throttle: Expert Opinions Please

Yes, all good points. The thing I think maybe got lost (in long winded post) in my case is that I've done over a year of driving and strip time with a Street Demon that I've tuned on extensively (seat time, strip time, and with the aid of wide band) , with none of the spewing issues, ever. Then one day, last week this cropped up. Went ahead with planned carb change for future plans, and it too is doing the same. I really suspect I have issues besides float adjustments. Certainly will look into though.