Zongshen RX3 carbureted version mods & repairs

[Weldangrind]

It's not that hard; whomever removed your jets for cleaning can certainly adjust the pilot mixture screw, and so can you.

Look at your first pic, that shows the carb bowl. Notice how the bowl has a curved section at the front? That is for clearance to the pilot mixture screw. Feel around under there, and you'll find it. The next step is to find some sort of screwdriver bit that will fit in there, and turn it counter-clockwise (while standing on your head) about 1/8 turn. Start the bike and go for a ride.

I'm not actually convinced that the carb is totally clean. The pictures you attached show the bowl and jets removed for cleaning, but not the entire carb. In your third pic, you can see the main jet next to the screws. The main jet screws into the large tube with the o-ring, and the smaller tube to the left is the slow jet. I suspect that the hole the slow jet screws into still has debris in it. The only solution is to remove the carb and carefully clean that passage.