Spot on mate.
What clip position is the NECW in? Have you tried going a clip position richer? 1/4 - 1/2 throttle is most impacted by clip position, so I would do that.
If a full clip on the NECW is too much, then as you've said.. NEDW is the half clip richer version (same taper profile).
In my 2013 I always ran 40 NEDW#2 175. In my 2018 I'm at 42 NECW#3 175. I could probably go richer on pilot/diameter as AS is just past 1 turn from seated.
These Suzuki needles have a long straight section compared to the stock N1EF as well. So in some ways the diameter will impact small throttle opens. But by 1/4 throttle you're usually well onto the needle. The delivery is rather smooth..
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