You won't hear it, so I won't bother.
Spend your piss and vinegar on a liberal Democrat or are ya slipping Dick ?
The early Mikuni Solex are as good as early CV's get . They however will not tolerate even large volume individual air cleaners . It is possible to get them to work without the air box(s) but you will achieve one of two results . Wide open throttle and pull like a freight train or part throttle high vacuum cruise but not both .Even the later BS40 (Suzuki Savage) is a decent mixer if given sufficient volume behind the carburettor .
I won't spoon feed it to you unless I think you will not only use it but teach what you've learned . However...
Anything you can find on carburettors by XS John (RIP old friend)
Anything more than 34mm in a round slide Mikuni on anything less than a fire breathing 750 is silly . Find the carburettor guide and thank Dick when you're done .
EX500 carburettors are a good compromise
Keihin CR's just rock . Dialing them in is a pita
PWK's are rarely PWK's Look for Mrriggs posts
Lectron's are at best an off on switch but work very well WTFO. Even better on HOOCH
Your ports are clean but mismatched to the manifolds . They however are stock with all their faults . Do not "just clean up" the ports other than matching to the manifolds . Since the ports are marginally too large anyway removing even the slightest material from the wrong place can put port velocity into toilet . The CV carburettors cover up this too large port quite well .
~kop