I'll be sure to try that out!My Kawi ZRX1200 clunks heavily going from neutral to first. So what I do is pull the clutch and hold it for ten seconds while I pedal the bike forward to get all the gears moving, then I shift to first gear and there’s no clunk at all. Try that with the Ninja.
I don’t remember my Versys doing it. My 2017 z900 doesn’t really do it but I’m in the habit of pedaling forward on all my bikes including my zr7S, just a slight push forward with your feet, It’s easy and becomes second nature. That big clunk isn’t good for the gearbox. Excessive chain slack can cause it as well.