Why don't youse just get rid of the old carburated skirtskers and buy a fuel injected softail model ?
Well I suppose I could, got any spare change you could sling me to help with that?
Just for you Beages
Well yeah they can be, some more so than others. Keihin CVs are about as good as they get for holding a pretty accurate tune long term, at widely varying altitudes. The 40mm ones apparently support up to 75 hp, I don't really know about the 44mm ones.