I build alot of these carbs, in fact building a set today. For good starting point, regardless if you have the solid needles or the bias needles, remove the dashpot, dampning spring and piston, with the end of dial caliper set the jet down from the bridge at aprox..070", that's where I set all of mine, it's textbook setting, and half my customer never even touch them set there.
Hope this helps.