I posted my review here if anyone is interested.
How do you remove the driver? Mine seems stuck pretty good.
Well that’s just until the magnet shifts and makes a short between the positive of the second battery and the battery tube.
Deleted. Posted in wrong thread
Has that ever happened? Genuinely curious since I’m using a magnet also. It’s a pretty strong magnet that sticks both cells together very well. Don’t see how it could shift. The inside of the battery tube is anodized also.
After you remove the (driver) retaining ring , remove the bezel and reflector , and insert a very small screwdriver in one of the holes for the emitter wires , and push GENTLY . Be very careful , so you don’t damage the driver .
Also wait some time if someone has a better idea .
Maybe use a small allen key. Blunt on the end
I don’t know if it happened already but since it is possible one day it will. By dropping the light for example. I also wouldn’t rely on the anodization. Better press-fit the magnet in a delrin disc of the same diameter of the batteries. Then it is 100% safe. I think it is no fun when your flashlight suddenly turns into a grenade or a rocket. :confounded:
Never thought of allen keys 
Nice Robert
You have these too, bypass the spring for less resistance…
Some of my most used hand tools. My L6 driver came out easy with a little tug on the spring. The driver has a notch at the edge, I think, is made for a tool like below - top blue one, left end. Though the tip actually broke off a little, it's still great for prying out drivers, even ones that have some light glue. The top bent needle nose I use a lot - great for holding down LED wires for soldering, great for bending 7135 pins for stacking, etc. The Rosin flux pen, recommended by Richard, works well. I went thru a couple Kester pens and I'd say this is as good so far. The green needlenose has slightly sharpened ends - great for most small hole retaining rings. I got a larger pair for the larger rings, other pairs for bigger holes.
Here's a pic of the L6 with some comparable size lights. You should be able to make out the names, accept the no-name in the middle:
I think the pic represents the sizes well, though the pic quality could be better. The 2X is a little smaller head, by about 7mm, the K40 is very close, while the 7G10 is a bit bigger. The Roche LS01 was my first XHP70 mod, but sure gets hot almost instantly.
I finally got the driver loose, took a little more prying than I wanted to do.
I took the switch bezel off and trying to get the switch out to have a little more room to do a resistor mod. How do you get the switch out? I can get it to lift up but it’s still attached to the driver, it’s seems to sitting on a shelf and can’t drop down. I could unsolder it from the driver but that may cause damage.
You’re holding your tongue on the wrong side of your mouth while finagling the driver….
Haha that’s probably it, probably easier than Iam making it.
The L6, or at least mine, doesn’t have the excessively long leads like most manufacturer’s builds, so you need to de-solder the leads from the emitter mcpcb in order for the driver to be lifted. The switch wires should be long enough to do what you want without removing them.
I have Thermal Paste all over the leads from my swapping out the factory mcpcb with a larger MaxToch version.
How are you liking the U21?
Ahhh, think I toasted it - the driver. Somehow the main LED doesn't work anymore, but the dragon eye thingy mode works fine. This was an engineering proto unit anyways. Was gonna ask for a replacement driver, but really want to replace it with my own ATtiny 85 FET+1/Narsil, then use a de-domed XM-L2 U4 most likely. Better throw, less lumens. I really like the host, but I'll lose the USB charging, but can use at least one of the switch LED's for battery monitoring, LVP, and locator LED - all supported in Narsil, plus the smooth ramping for a thrower should be nice - see how it works out.
Just to mention that all the reviews of the Liitokala 26650 I have seen show at least 5,000mah capacity, my own review included.
Here is the link to the reviews of the cell on this site LiitoKala 26650-50A 5000mah 26650 - great first impressions
Some posters have found that they won”t work in series without a magnet or other spacer to make contact but some find they do.
I have 6 of the cells & mine make contact fine in series in both my S70 & Z1 with no spacer :+1:
Hey Tom, have you managed to get Narsil running in your L6 yet? I’d love to get Narsil running in my L6 and wondering about the best way to go about it.