You can get them at the dealer. About $13 a piece and a 210 is the biggest one they sell. At least at this one. If u know the mechanic he may just give u one.
No you don't have to buy a kit!
I tried a couple of dealers, but ebay might be the ticket, I'll go and take a look.
remember a 210 dynojet main is NOT the same size as a OEM mainthe dyno jet are sized in mm the Oem are sized in flow
you can always get an 1800 and not worry about what yet it came with....