I have had some problems with tank crud getting into the carbs on one of my Vincents. I considered the tank sealer but was talked out of it by a club member who had big problems with the sealer letting go after a few years. Then you really have crud getting into the carbs!
In the end I just bought some inexpensive see-through inline filters from an automotive shop.
These are very small and unobtrusive, but fine enough to strain out even the most minute crud. Because they are see thru, you can see the dirt building up in them and change them ($3 ea) long before fuel starvation becomes a problem.
My very knowledgeable (and stubborn) friend Dan will not run filters on a motorcycle as he claims they can partially plug and cause lean running/piston failure. I don't see how this is possible with the see thru filter, provided you look at it now and then. On the other hand, crud constantly going into the carbs is not only maddening to deal with, it very definitely causes fuel starvation.
The last three trips Dan and I have done together involved a lot of time at roadside with him dissassembling and cleaning his plugged carb jets, both a set of Mikunis on one bike and Amals on the other.