@ Zappaman:
What would you consider a better driver than the Q8? It has high power capabilities, and Anduril.
And what are you insinuating about correctly milled reflector? And correct centering rings?
I may seem brash, but I’m nevertheless curious.
Better components for better current levels is what I meant. If you read a couple of threads on this topic, several mods have been done to the current driver to get better current output.
These threads also explain how the XHP50.2 is larger in diameter and the reflector has to be reemed wider to allow a fit. The centering rings would be taller to (effectively) meet the now reemed (deeper fit up into the…) reflector (and center around the led of course). This way the light bezel screws down firmly onto the centering rings for a correct fit.
Tom E suggested a more efficient FET (Vishay SIRA20DP) but no one has done any driver mods. The lower profile centering gaskets can be compensated with a thicker bezel “o” ring, Sofirn would probably include the correct centering rings.
Unheard and I are pushing for this Q8 Pro. Not easy to convince someone of different culture and acting as a middleman (Sofirn/Barry), so the numbers have to speak.
There are some that throw in a wrench and then other would-be members are less inclined to participate. As the existing FET can handle the current, maybe limit it somewhat. Hcanning and KawBoy both are getting some 16,800 lumens. I estimate some 48 Amps!
hcanning didn’t mention a problem with the spacers Sofirn provided (in posting #19).
13 entries now.
I’m in for one
If I'm not on the list, please add me for qty 3. Thanks!
I thought someone did replace the FET, I read several posts a while back on it all. I would be fine using the stock driver if it gave me 15k lumen, but efficiency is also important (and cost a dime more to use a better FET, right?)
I get they have a pile of old parts they need to use up, but they also have competition and better FETs and other tweaks will be winning the biz if we complain enough about it- maybe? 
I've replaced FET's on Q8 drivers, as well as on other China sourced drivers. The problem over there is sourcing - it's not just a dime in cost, it may be difficult or impossible to source at a decent price.
I’m in for 1 with the emitters mounted to the MCPCB.
In for 1, if emitters are mounted. Tint doesn’t matter.
19 
Nice to see takers going up, I will buy one if they become available ,please put me on the list.
Thanks Unheard
Depending on price, I’m for parts or a whole light.
Add another one mounted for me.
It’s just about a XHP50.2 populated MCPCB. You need to agree on buying one for this list. Price isn’t fixed, but of course must stay around the original price give or take about 10%. Hope everyone agrees. I want to ensure Sofirn they have a fixed number of preorders.
Thank you, updated.
I would like 2 please…
I presented the list of participants to Barry. The good news: Our cause is revisited by Sofirn 
. The bad news: Nice 3V XHP50.2’s are currently not easy to source. It will take time, if Sofirn decides to have a batch of populated boards manufactured.
Sofirn has had a history of listening to feedback and hopefully they’ll see the interest in this product. Thanks for reaching out to Barry and reporting the news.
Yep, I have an SP33-V3 back-ordered two months now with Barry/Lan- world is waiting on the 5k 50.2s and so am I 
I’m in for 1