Mine should be here today 
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I received my Kr1aa today and installed the pocket clip. Even with the tail cap tightened I am able to rotate the pocket clip quite easily (not freely, but definitely much easier than all my other Emisars). I can basically rotate it with my pinky finger with very little effort.
Is this normal or perhaps an issue with tolerances? Anything I can do?
Hi, yes, the clip is designed to rotate when the tailcap is tightly screwed in.
Unlike the KR4, the user needs to screw in the tailcap with a lot of force to make sure
the clip does not rotate, otherwise, there will be no contact which is not convenient to use.
So, this has been improvded on KR1AA.
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Yay!
Already destroyed an o-ring mucking about with the clip, but all good. And the 2700K turns out to be a great colour, best of the low K emitters so far for me.
EDIT:
Not all good, a chipped lens, with a gap. @Hank_Wang I’ll drop you an email and perhaps I could get a new one sent?
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From Hank regarding the gap;
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Interesting, I wonder how it affects the water resistance…
Hmm actually looking at his picture, I’m not sure if thats the glass or optic chipped. If it’s the glass it’ll affect water resistance for sure.
It was definitely the tube, once I pulled it out and just placed it in the light and let the tailcap set it, it’s fine.
FWIW, the clip didn’t make a difference on or off, I took it off pretty early in my mucking.
This helped the KR4 in the picture, which also had flaky behavior. The tube in that light needs to be inserted in the opposite direction on mine with the bulge at the head end instead of the tail. If I insert with the bulge at the tail end, the light comes full on and won’t turn off as soon as I touch the tailcap to the body threads.
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Congrats! Glad youre happy with it 
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@RichH Says it’s the lens, I’d take that to mean the actual glass lens and not the optic.
It’s the optic @Chris100575, just took it out.
In fact, and this is nothing to do with the chip, the optic is terrible to the point I think I’m returning the light.
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That’s not good! I’d ask if it got better further from the wall but the fact that the dark spot’s off-centre makes that seem unlikely.
I think I’m going to hold off on getting one for a while.
Mine looks fine. Second image is bottom ramp on the KR1AA and a similar level on the D3AA (bottom ramp is almost undetectable).
D3AA - 519A 5000K dedomed
KR1AA - NTG50 4200K
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I took the TIR out and shook out a tiny shard of plastic from the chipped reflector. It looks more even now, just the typical square donut hole from the square emitter. The plastic chip must have been trapped on the LED.
Spinning clip could still be a minor annoyance, I may try and trap it more securely with a second o-ring.
Still, this looks a lot better than it did. These side by side pics really make the SFT-25R look green!
For info they’re, L-R:
D3AA…
SFT-25R 5000K
Nichia 519A 4500K dedomed
NTG35 5000K 95CRI (second bin, slightly rosy)
Noctigon KR1AA…
NTG50 2700K 95CRI
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There are two things going on here. There’s a cutout to allow the reflector to be taken out more easily. But mine does have a chipped TIR, as if it had already been repositioned. Plus there was a chip inside the head distorting the beam.
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sorry to hear
best to remove the O ring before installing or removing the clip or spacer ring
glad you were able to fix that
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All is well…
So am I Jon, a weird moment as I knew that Hank would have got this right but couldn’t believe how wrong it was.
The guy is mega busy on these at the moment, as well as fulfilling orders for other lights, answering emails regarding emitter choices, hidden menu items etc, etc. To get one wrong is fine, he’ll put it right I’m sure by sending another TIR.
It was truly bad luck the tiny chip of plastic managed to find its way onto the emitter and screw the beam. It’s a lovely tint for indoors, and probably a nice outdoor short walk light. Look what it does to the earthy colours. 
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That is a cool knife! What is it?
This is FAQ almost every week, “Hank, my optic is chipped?”, the optic is not chipped, it’s designed/produced in this way, which is called Injection molding gate.
The optics are jointed together in the production, then needs to be cut into one by one, this “chip” is presented on every optic, and the beam pattern will not be affected.
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Hi Hank, mine came in today. Nice little light for sure!! For some reason when I put the pocket clip on, it won’t allow me to turn on the light. Without the clip, it works just fine. Any ideas what I should do here?