The suzuki NExx series needles are comparable to the N1Ex/NOZx only on the 2nd and 3rd tapers. The 1st (from clip end) is thicker (leaner)
I've ran N3EJ/N3CJ/NEDJ/NECJ/NOZJ all with the same pilot in the same bike. I had to run the N1Ex on the top clip here to get the bike to run OK, and it still got poor fuel ecomony and spooged heavily. The N1Ex and NOZx over fuel off idle with these bikes.
My suggestion is simply to spend some time experimenting with other needles and see what you find for yourself. Or you could just throw a huge main at the current setup. We are in different parts of the world, possibly using different quality fuels so all that plays into it as well. Only you can work out what will work.
