Hi guys first post on here. ive got a mikuni 26mm and a chinese smaller carb.

[Zumanity01]

Are both the pilot and main jet meant to be clear through from the bowl right through into the carb body?
i pulled one down today and noticed both the main and pilot had holes inside the carby but the main jet on this one today seemed to just have a screw in cap on top...
How does this work and where does the fuel flow from?