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

We use to do the trick I mentioned in the 70's when upon launching off the line we had the same problem your having. I would try this trick, it's cheap and may solve your problem. If it doesn't than yes you need to look else where. I will tell you that since I went to a bypass fuel set up, I've never had this problem.