Yes that is exactly what I plan on doing lionhart and akhyar
But this one stays stock for now, still looking for nice soft gloves for handling lenses and refelctors.
Maybe when those are in I will mod this stock Z1 (because one of those BIG leds MTG2/XHPxx in the Z1 sounds pretty sweet too!)
Would be cool to 1 on 1 compare the stock XML2 NW vs the cool BLF parts (Bistro XPL HI NW tailcap) of the pipebomb 
I’m also interested in the stock Z1 with XHP50 emitter, but only when using 2x 26350 batteries as I’m not fond of the extended length of 2x 26650 as I do find the size of the “pipebomb” feels just nice in the hand.
But so far only one member has tested the Z1 XHP50 with 2x 26350 and his initial impressions on the config is not that impressive, so I’m reading this thread on what are the options available
Not everyone on here is a modder unfortunately:-(
A Professional is a trained Amateur.
Everybody starts somewhere, right?
:+1: …… Amen!! 
No sorry
An amateur practices till he gets it right
A professional practices till he gets it right all the time
This makes me a wannabe amateur
See? You’ve started! You wanna be an Amateur in training, which leads to becoming a professional. You can make it a connoisseur act, flashlights with wine and cheese, ahh, the good life! Light up the castle and throw grapes at it… 
FX35 and xhp35 P2 1C Sinkpad using single Thorfire 5000 protected: lux; 118 / 669 l/h/strobe; converted same parameters as OP lumen 551 / 3124. Focus just short of. Yellow dot center. Yellow ring outer. offtopic: I am eyeing, budget permitting, a mirrorless Sony A6000. Very aware that pics are mandatory. Any thoughts?
A single protected cell for a boost circuit, sounds like you’d be better off with an unprotected high discharge cell.
Will change cell to BASEN unprotected. Thanks for the input.
Fresh 4.2v BASEN 4000 checked at 583.72 and 3203.49 a difference of plus 31-32 lm on low and plus 79 lm on high. The order is h/l/st. Seems quite consistant for a 1A (1.5A max) driver. The mtn 22mm 4s was ordered 2.5A (NTE 4A led)
My XHP-35 at 2.89A is making 2300 lumens, wonder why your numbers and mine are so divergent? I’m using 4 18650’s on the second one, 4 18500’s on the first one, both are running modified led4power LD-2 drivers.
The 2.89A one is a MaxToch Shooter 2X, amps measured at the emitter.
Well strictly speaking a professional is someone who gets paid whether they’re well trained or now
I did resistor mod in the meantime. It doubled the tailcap Amperes and got the light A LOT BRIGHTER!
Look here for more information: Z1 resistor mod
Will that location be real obvious when I look at the driver?
The only input I can give is driver design differences. Without tearing it down I do remember he swapped the coil to small fine wire wrapped sealed type versus coilcraft (4s). The FX uses a huge coil (coilcraft type clone) 1R0 111 TB9. I’m looking at the 111 as a ratio. The 4s mtn I recall a very large R050 installed. Sorry I can’t be of help. I don’t know.
I took a picture for you where you can see the stacked resistors. There are one R150 and one R160 side by side, the R150 has my added R100 sitting on top
Thank you for the picture…and lol at “Gyro Gearloose”
I’m ordering a MTN Max buck driver (2.5A) to run an XHP-35 hi in this light, but I’m torn on which driver program to order.
The guppydrv is what the cats meow, but it doesn’t come with low voltage protection, not that I ever run my cells down too far, but with 4S unprotected it might be wise.
That leaves me with MTN standard moon, low, med, hi, or custom, not sure which way to go. I don’t really think moon is that applicable to this light though.
With guppydrv, I can set the turbo timer myself, but with the MTN standard, I’ll have to preselect, which is another dilemma since I have no idea how this light handles the heat.
Any thoughts?
Custom, pick your own levels, 60 second Turbo timer (for safety) you can alway’s kick it back up and the LVP. :+1: