I think I understand what I read, but I still have to confirm.
The china copy vm26:
TBolt USA, LLC » Pitbike Engine Parts » CARB KITS » China Mikuni VM26 copy
And the real japanese one VM26:
TBolt USA, LLC » Pitbike Engine Parts » CARB KITS » Mikuni 26mm Carb
The two carbs looking alike use different mainjets, and even the sizes of the jets cant be compared to each other??