Motorcycle Repair: New fuel and carburetors, vintage bikes, vintage rides

Question
Hello, with all of the new Harleys comming out with fuel injection, I've also heard about possible problems with carbureted engines and the new fuel. I've looked everywhere I possibly can and while my local dealer has been able to show me a demonstration where pouring brand new fuel through a screen after the fuel is done going through there is a wax like substance left over. They tell me that this is what caused my carburetor to stop working, but cannot give me any reason why it does it. Are we comming to a point where we are all going to have to turn away from our vintage rides and go to the new age?  

Answer
I have worked on bikes for years and alot of older bikes without any fuel problem. Even the older cars still have carbs and many aftermarket motors are carberated. Fuel will varnish after sitting for a long period of time and it does go bad with time. The hardest thing on a bike is letting it sit for long periods with fuel in the carb. Most of the time its because the bike sat all winter and the fuel went bad. If you think about it, if the dealer that showed you this says that the fuel will plug up a carb, it will deffently plug up a fuel injector. The hole in the injector is smaller than the jet in a carb.
So to answer your question, no I dont thinkahyone is going to have to get away from carbs or the vintage bikes.
Good luck and happy riding
Mike