Couldn't find ratio information for motorcycles on Berrymen's web page. Seems to relate to cars mostly.
Assume the B-12 carb cleaner rather than B-12 fuel system additive is what you suggest. Can you give the ratio formula, i.e. how many ounces of B-12 to three gallons of gas?
Also I noticed that Seafoam gives a ratio for CARS of 1 ounce per gallon.
Thanks for the further information. Really appreciate the helpful advice you experienced riders are willing to give to us struggling newbies.