Re: Frame Breaking, Carb Flooding, and other joys from China, Can you help?
If you have a NT carb you don't need a new carb, you just need to set it up properly. Have you removed the float bowl and adjusted the float height? A lot of times people find that the jet tube isn't screwed in all the way too.
Whatever you do don't buy a CNS carb, they're difficult to set up right.
There's not going to be much advantage to a shift kit unless you have a lot of hills to climb.