uuuummmm.... OVC's experience must differ from mine.
I bought and ran a 24mm flatslide mikuni on my Gila kit.
Did not like it for several reasons...
First up... the main jet... I bought a K&N air filter to go with my kit. Ran super rich with a 110 jet. So, I removed the filter and ran it with 125-130 I believe. Ran pretty good... but...
What I disliked most about the carb was that it SPITS fuel ALL OVER YOU AND YOUR BIKE. With no filter (which is how it ran best) a constant spray of fuel was flying out onto my foot.
Put a air filter on, to prevent that, and it sogs it so bad with gas, that it DRIPS fuel all over you and your bike.
I will say, on the top end, the carb felt pretty good, however, I believe that 24mm is massive overkill. I think there is a fundamental lack of velocity with a carb and intake so huge on a tiny 75cc cylinder...
Check out my post on your other thread... 18mm is way better. Great throttle response and fast!
https://www.mopedarmy.com/forums/discuss/7/125189/125189/
I will say in closing that I would not rule out a 21mm intake and carb though... may be worth a try...
J