the one positive thing I can say about the DOHC carbs is that they had a better idle circuit and choke than the SOHC predecessor. My 1975 750 you have to hold the throttle when cold just to keep it running no matter what, but my brother's 1979 750F will just sit there idling on choke. If it is below 50 it will stall once or twice, but otherwise that thing just ticks over like it's no big deal. Of course the carbs are terribly designed everywhere else so....there is no making up for that, but at least they idle nicely.