I looked at my other dropin from IO and made a plastic washer similar to it and it did stop the 1-3 mode issue but the rings are still there, I will try it in a different host and see if that is the issue.
Thanks All.
I just received a drop-in from IO with the same ringy beam problem. Also seems to be missing the clear gasket. Waiting to hear back at the moment.
OK, here’s the situation. After I provided Hank with a beam shot, he contacted his factory and determined that the reflectors used in this latest batch of drop-ins are different. Here’s the beam shot:
His suggested solution was to use an OP reflector instead, which he offered to provide me with. I don’t really consider this to be a solution so much as a less than ideal workaround, as I’m not exactly a big fan of OP for my P60s.
I’m not really sure what is different about the new reflector as I don’t have a drop-in from the previous batch to compare it to. Swapping it over to the MF 3-mode drop-in results in the same problem. Adding a spacer doesn’t help either. It makes things worse. If anything, the opposite is needed, but that’s not possible without removing the brass plate.
I have a bunch of empty drop-ins from a couple of different places arriving soon, at which point I might do some reflector mixing and matching to try to improve things. It’s not really a huge issue outdoors, but indoors it sucks.
FYI
Damn! I have one on the way - a neutral to replace a cool white I was sent in error. When I first put it in, it looked horrible - it was obviously not neutral. Hank offered to pay shipping for me to return it, but I thought I’d just keep it and get another. It looked really ringy too indoors, but with a bit of adjustment isn’t _too _bad. I’ll probably put it in a L2M and give it away. Outside it’s OK (apart from the tint).
I’ll be unhappy if the one on its way is crappy too - I want to keep it for my L2P.
(A man that listens to Foy, and buyswhathesays)
Just got another message from Hank stating that he’s getting a new batch of reflectors in that will solve the ring issue. He offered to send me one for free of course, after they’ve arrived. I would imagine that he’d be happy to do the same for you if need be. So all is not lost 
Now that’s great customer service!
I found an old OP reflector and that fixed the problem for me.
Just a few days ago I ordered a NW dropin with an OP reflector from Hank. When it arrives I can report what the beam looks like...
Just noticed that these are now marked “Sold Out”.
Yikes!I hope you guys get your reflector issues fixed,Hank is good to deal with and should take care of this.I often reccommend this drop-in because I'm happy with mine,if it's any help I used a thinner isolation disk from another drop in to focus the emitter better and it works.good luck guys.
After communicating with Hank, I feel quite certain that what is actually happening is that he is getting the issue fixed before selling any more.
Yeah, I figured that was what was going on - he doesn’t need the headache of faulty drop-ins.
I had another look at the drop-in I have - it’s missing the bit of plastic. I’ll wait until I get the neutral one before getting back to Hank.
Received mine today:
Here's a whitewall of my three IO drop-ins:
Left is a Solarforce L2P, center is an L2M in single 16340 configuration and right is a single cell L2X, all SMO.
The "Final Notice" bill on top of my computer I keep getting from Car and Driver after I stopped my subscription. That is my final notice or it goes up a quarter an issue or something. They make it look like your power going to be turned off. I can't afford flashlights and Car and Driver. I can barely afford a car.
ohtobemeFoy
Foy does not need car and driver anymore. We need Foy here.
If I need more money I tell MRSDNF to get another job that pays more. Seriously I really think that she is deaf as I never get a responce.
I received the 2.5A, 3C drop-in today (pretty amazing shipping times - took 8 days to get to UK). It’s horribly ringy. I’ve contacted Hank, so we’ll see what happens.
Good news is that it’s definitely neutral this time (I was sent a cool white one last time).
Hank now has replacement reflectors in stock that are free of the ring issue. He’s throwing one in with another order I placed tonight.
(the P60 drop-ins are subsequently up for sale again as well)
Apart from the reflector issue highlighted in this thread, which has now been fixed, these are excellent drop-ins. They are put together really nicely, and have a great feature set. Totally worth the money.
Hank is sending me a couple in my next order too, for two drop-ins I have which have horrible beams. He’s good to do business with, isn’t he? Very responsive.
Indeed he is. Prompt, friendly and helpful. Can’t recommend doing business with him enough.
Today I received my 2.5A NW dropin with OP reflector that I ordered weeks ago from Hank and I am quite pleased.
The beam is really smooth, exactly like you would expect from an OP reflector.
That grey thermal compound they supply seems to be effective, but it's kind of messy.
I was a bit surprised about the low mode, because it's really low. I guess about 2 lumes, I can look at the emitter on low without big discomfort. Can somebody confirm that?
Since the current draw on high is approximately 2.5A I don't really think there's something wrong with it.
Edit: Current draw on low is 10mA - killer runtime 