If I recall your carb has two adjustments. One of the adjustments is backwards, meaning the more you screw it outwards, the leaner it gets. Again, I can't remember. Look at your manual. There are many here who don't suffer from CRS like me. They can give you better info about carb adjust on the Naa.
I know for a fact, my IH C has only one adjustment, someone screwed it all the way in and the fuel mix was way too rich.