Hey buddy, just stumbled on your thread. I'm not a professional electronics guy but I've burned myself with a soldering gun and have made some stuff. What power source did you have running the led tower when you measured the current? I assume the 2-18650 holder. I ask because the voltage range on the unit is so wide and it says "MAX" current draw that it would also theoretically work in an M4 with 12v worth of CR123's, I wonder if that current draw number takes that all into account and varies with the input voltage.
How does the beam look? Are you pleased with the output, throw, and tint? That's all that really matters.
In my own experience, I have an M3 and I bought a Millennium turbohead for it awhile back and tried a few Lumens Factory tower assemblies and found the output disappointing, the tint was weird, and not worth the weight, at least on an M3. I ended up selling the T-head and modules and modded my own. However, that was my own experience. The lack of heat sinking on those tower bases that have to protrude up through the reflector means they don't run them very hard, and those big turbohead reflectors were meant to gather all the light from an incandescent filament and don't really maximize the beams we wanted out of an LED.
If you're inclined to mod it, you can try your hand at removing the LED and trying other options in there. Not sure how much you've modded, but the fork in the road is always "I can sell it here and now, or once I take soldering iron to this, I need to accept the possibility that I could destroy it reducing it's resale value to zero." Once you cross that line, you can make wonderful things.
Now that that's out if the way...
That LED looks like an XPG2 or XML2. You can tell it's not an XML or XPG because the little board under the LED would be green. You can try your hand at unsoldering that and putting in an XP-L. Good luck! Let us know how you make out. Oh, for images, I recommend making an imgur account.
