Kawasaki StS 750 stock carbs.

[Sea-Doo 8989]

Hey guys,I was just curious if anyone knew the best place online to buy stock needle valve and springs for my dual carb 750 STS. I rebuilt the carbs and when I put it all back together I noticed one carb was leaking. I took it back apart to figure out what was going on. I noticed the one spring holding the needle valve in was a little lighter then the other side I had rebuilt. In the process the tip of the needle valve came off pulling it out.
The kit I bought online came with all the gaskets.. can a guy just buy stock springs and needle's?
Thanks for the help in advance!