I've been using Seafoam for quite awhile now......mulitiple cans in multipe tanks.....nothing. Didn't do diddly.
I read one of Fudgie's posts awhile back about Gumout's F/I and carb cleaner. Said it even improved his gas mileage. Thought I'd give it a try.
I'm hear to tell ya, the stuff works. It works like Seafoam never did for me. Pour in one of the 6 oz bottles, fill tank with gas. Go for ride and keep it under 3000 rpm for that entire tank. You'll notice an improvement almost within the first couple of miles. Big improvement with the slow jets.
It cleaned up mine......no more miss or hesitation at low speeds. I'm a believer.
http://www.gumout.com/ourProducts/fuelInjCarbCleaner.asp