Finally a Four Barrel, I got questions!

Napa sell a nice carb cleaning kit for about $20.00.
It is a gallon can with a basket built in with this thick heavy cleaner in it.

You can re-use it alot, the worst carb I ever rebuilt was one of an old 72 or 73 honda CB 360.
My buddies grandfather bought it new, rode it for about 6000 miles and parked it.
The last inspection sticker was in 1979.
When I cleaned the carbs and tank a couple of years ago, there was so much varnish in the carbs that the slides in the carbs would not move and the floats were stuck in the down position.
It took about 2 months of soaking, but both carbs cleaned up like new, and the bike will always start on the first or second kick.