Just got done replacing the float valves and seats and setting the float heights (to 25mm) to cure some leaky carbs. When checking the float height externally with the sight glass method the fuel level in the float bowls is about 2-3mm above the float bowl gasket. I haven't been able to get a definitive answer on what the correct level is, since I suppose there isn't one I suppose, since Honda never spec'd the fuel level this way. Seems like it should be below the gasket though, to minimize leaking. Does anybody have a good measurement for this based on a careful setup and say NOS valves and floats, seems like the closest we could get to an "official number".
The current level is after the bowls sitting with fuel over night, the day before, just after reinstalling carbs, the level was 2-3mm lower.
Seems there's no other conclusion other than that the floats are absorbing fuel and not floating as well as they should, and that I need to replace them. Recommend source for these? Would like to see that 'official' number if anyone has it.