Stalling/loss of power after getting after it.

Im not too good with carburetor wizardry, but to me it sounds like its running out of fuel.(well no ****)
Anyway, in california at least I have heard of carburetors just clog and the metal turn into a weird oxidized mush on the inside because of the high ethanol/alcohol content in the gas. (especially if it sits for long periods of time w/ fuel in the bowls) Maybe some of the passages are just full of crap and not getting the right amount of fuel into the engine. If not, I would look for the same stuff in the fuel pump, filter, lines, etc. Just clean everything out and make sure its clean. if there is nothing, its something else out of my range of knowledge.