http://www.eccarburetors.com/
This is their web site, they are happy to talk shop anytime I have called them. If you send your carb to them you wouldnt have to make all the mods I had to make to get it to work but I wanted to keep using my cart during the process. I wish I would have taken a picture of the inside of the carb. It was amazing how much they opened up this carb. They polished it up nicely also. They removed the choke from it also, I never even had a choke hooked up so it did not matter to me.