Ok I guess it is time to clear this all up.... I have not switched over to the CNS yet its still in the box, I do have my NT running very good now though and will continue to run it on the engine it's on for a while, I have another engine that I will be putting the CNS on in the future, but I will build a good intake for it before I do anything with it.
The way I finally got my NT carb going good was, using some toothpaste between the needle and seat after chucking up the seat in a small 12V drill I then held the needle with some pliers and spun the seat slowly while moving the needle back and forth, the tooth paste has mica in it which is a mild abrasive so I lapped them together this way to for a perfect seal, I then soldered my main jet and then redrilled it with a #73 wire gauge bit to limit the fuel flow and eliminate the running to rich issue I was having after getting the needle and seat lapped in, I also adjusted the float so that with the carb held upside down and the float sitting on the needle lever fingers it would be even across the bottom with the main jet, I'm not sure what the actual specs. are on the float setting I just know that this setting works just fine in my carb. I made sure that I have a good air tight seal between intake and carb. and it's running very good now.
I hope this will help someone else and at the same time end the questions about my experience with the CNS, because I have not dove into that tank yet....!
