[SpudRider]

You are unlikely to find Teikei carburetor jets at any motorcycle shop. However, I suggest you do as I, and try to find some Mikuni N102/221 jets. The following thread contains all the information you need to understand carburetor jets for your Zongshen ZS200GY-2.

http://www.chinariders.net/showthread.php?t=6501

I quote from the above thread.

Zongshen 200GY-2 With Stock Muffler:

If you are using the stock muffler at sea level, the stock, size 132, Teikei main jet is probably pretty close to ideal. Begin your experiments by raising or lowering the jet needle. If the jet needle adjustments are not adequate, I suggest you experiment with the N102/221 Mikuni main jets. The stock Teikei main jet is roughly equivalent to a size 130, Mikuni main jet. Therefore, to lean out your mixture, start your experiments with a size 127.5, Mikuni main jet. To enrich your mixture, begin experimenting with a size 132.5, Mikuni main jet.