An additional spring bypass should help a lot especially in a 1 cell configuration.
If you are using standard DMM probes, they are probably too thin, you should use short and thick ones (Messleitungen) 
Yeah if you are using stock DMM probes & have not bypassed the springs, that is probably it. Bypass the spring & use fat short wires from the DMM & i am sure you will get higher amps.
Which dmm probes you prefer? I will do the Bypass as fast as possible.
Just try some short fat electrical wire you have, almost anything shorter & fatter than the normal thin DMM wires is better for measuring high amps.
DMM, digital multimeter. The probes are the metal bits at the end of the wires that plug into the meter. LEDs are voltage sensitive and maintaining high current through them extremely dependent on eliminating voltage drops in the circuit which the meter is now part of. Other voltage drops occur in the switch and springs. Minimizing all 3 should result in a dramatic measured difference.
Very well explained. Thank you very much.
So I should use the wires without probes? And replace them against fatter and shorter ones. But how the wires fits into the meter without probes?
And what’s with the dmm wires at the led. You soulder them for measuring?
Use banana plug, just solder your 22awg (or thicker) wires onto the banana plug and you have a pair of good test leads.
I even have solid copper clamps soldered to my (short, thick) DMM-leads, because I found a considerable voltage loss over the iron clamps I used before. I could not find solid copper banana plugs btw.
Congrats for djozz and Major.
Just ordered the banggood driver and eBay fet. As soon as they arrive wil try this in my Uniquefire 1504 host that I just received.
I really hope that this thread receives much more attention and participation from BLF members. This mod has a fantastic cost benefit ratio.
Keep the good work djozz/Major….
I did that with a 105c today. …
stripped the 8 7135 and mounted the fet (taken from a computer Mainboard )
low and high work bit mid does not…
could it be that a fet has problems with a specific pwm ratio?
amps are nearly DD
I know not enough about FET's to know what happened to your med mode, I just know that there are several types, some work as a discrete on/off switch, others allow intermediate currents (like the FET on the LD1 and LD2).
thanks mozart. Note that in post #10 there's a link to an even cheaper ak-47 driver (set of 2 for $2.89) , from dx. Dx does not mention the type but they are genuine ak-47A drivers.
edit: dx is sold out at the moment :-(
A common issue is that output in each mode is a fixed percentage of maximum so when you up the maximum by replacing the 7135’s with an FET the middle and low modes get boosted as well so low mode might be brighter than one might wish. This is normally corrected by adjusting the firmware to lower percentages.
Another is that if the input capacitor is in the wrong place voltage spikes can cause malfunctions.
I have bypassed the springs at switch and driver. Know the xm-l get burned 
I think thats to much current. Is that possible? It is hard to measure without destroying another led.
LED mounted on DTP board, & attached to a light/heatsink, you should not be burning them.
djozz
Is it possible to mod a QLITE REV.A in the same way as the Ak47, i.e., taking out the 7135s and mounting the fet?
I appreciate the QLITE modes, and have 1 driver that is currently not used that could be modded.
Thanks for the help.
Mozart
^ Answer is yes. First sentence of OP has a link to where that was first done (Qlite and Nanjg have the same circuits, just higher "binned" 7135's in the Qlite).
yes indeed, hence the title of this thread referring to comfychair, this is just his mod with a smaller FET that fits easier, and cheaper driver.
Thanks for the replys.
Tried to find some one that used the QLITE in this thread but didn’t find. Excuse my noobness. Trying to learn the basics yet.
I’m in my second led flashlight mod. The first was an Convoy S2+, that was accidently dedomed when received 2 7135s to its driver. Now mounting a Uniquefire 1504 host, that will receive a dedomed XP-G2 S4 2b and a fet driver.
Cant wait the parts arrive to mount a fet hot rod thrower.
Can this driver be zener modded for 6V output?