Same Question has been asked previously

http://www.suzukiquadracerhq.com/carburetor-jetting/vm44-round-slide-specs-please-help/msg5947/#msg5947


Also remember different builders mod different carbs differently and different pipes run different specs.

On my JH carb with a JH19, open dry filter, aggressive dune porting, and a fresh bottom end I'm running a 580 main with the specs listed in the above post.

You're short some information to even try to make a guess at where to start....porting, fuel type, elevation, air filter set up & type...etc  obviously from your comments it's running based on how it acting and how it sounds you should be able to make adjustments from there.