An addendum to the flooding issue.
A friend purchased an overhaul kit for a Carter #9626 carb & it came from the US [ Amazon, I think ]. It cost $US33. Junk. The hole in the acc pump shaft for the 'S' link was too small, I had to drill it out.
Here is the real kicker: the hole in the n/seat was 5/32" [ 0.156" ]!!!! I used the old seat [ looked to be 0.101" or 0.111" ] with the new needles. The new seats would almost certainly have caused flooding with high-er fuel pressures.
Since this thread was about Edel carbs, here are some real #s. Edel use small 0.093" fuel seats, for reasons known only by Edel. The area of a 0.093" hole is 0.006793 sq in; for a 0.156" hole it is 0.01913" sq in, nearly 3 times more area. So the fuel pressure acting on the needle has nearly 3 times more area to act on & cause flooding.
I can only guess why Edel uses such a low fuel level [ 7/16" float setting ] along with such small n/seats. The lower fuel level gives less chance of fuel slosh causing stumble/cutting out during braking & cornering. The change in the fuel curve [ compared to the original Carter settings ] can be adjusted with jet & air bleed changes.
Small n/seats are good for fuel control but they must be big enough to supply sufficient fuel.It is a compromise. The fuel flow chart provided by Carter is pretty useless as it gives fuel flow with the floats at a 2" drop...which is much more than it is in a working carb. So actual flow #s would be much less than the chart shows.
The Edel 800 carbs also come with the small 0.093" seats. One wonders if these will cause lean out on high HP engines, with bigger jets being fitted to fix the 'problem'.