He already did, in post 2104. He measured before-and-after and got a gain of 14 lumens, an increase of less than one percent. Measuring exactly the same light twice in a row is likely to show more variation than that.
There is no significant gain to be found here.
There's no insignificant gain either if you ask me..
OMG I need those 14 lumenz!!! 
kronos,
I have a(n) request / idea to help keep the extra tail switch assembly a simple consistent yet interesting and beneficial assembly.
My Idea is this, (especially if we are paying for them) please spec the āextraā switch assemblies to be exactly like the lit versions but without LEDās (or even with) and we can de-solder them.
This way as noted we get the advantage of the improved switch pcb and the now standard double springs and any other āimprovementsā there are.
Plus, if we wanted to we could use them for experiments, different led colors, different resistor values, etc etc. Without screwing up the existing artistry that is the current lit tail cap switch assembly.
Also to simplify costing issues all they need to do is buy more of exactly the same parts (I personally donāt care if they subtract the additional cost/price of the LEDās or not) from the existing Bill Of Materials (BOM) and build them the same way, thus there is less to āthink aboutā and/or to change.
So if folks want to have extra lit or un-lit switch assemblies it will amount to the same assembly. As we will be paying for the extra switch assemblies it opens up interest to more folks while making it as simple and beneficial as possible for us and for Manker/Banggood.
For example I would hate to go to town on the current switch assembly and screw it up so badly that that I need to cobble together a fix. and then loose the ability to ever have a lit cap again VS. either not screwing anything up or only screwing up the āextraā switch assembly but still having the beautiful one still intact.
Thank you for all the work you have done and I hope this request/solution is easily implemented.
I like it Ronin, +1 for the second lit switch board assembly. Couple of bucks? 3 maybe? Iām game for that, heck Iād buy 3 or 4 to have on hand. 
here is a quote from the Manker T01 review:
ā Inside the tail cap we can see something Iāve not seen done before in a light - dual cathode springs on the cathode PCB. The main spring is super thick for optimum electrical conduction. A second, thinner spring rides just inside it for increased flow of electricity. Think of it as having a factory spring mod. Both appear to be gold plated.ā
Well to be precise they should be offered in sets of 2, so the bad news is you need to stick with even numbers
I can think of a few other switches Iād like to upgradeā¦ TBH, Iāll probably grab a bunch of them just to have them available for mods.
You are right TK i realized this myself after i posted, yes for 14 lumens it might not be worth while. Especially if Roninās great idea take hold to sell these upgraded switch assemblies on banggood. This i have asked for before but then we didnāt have a mass manufactured possible solution to the āpre switch bypassed drop in boardā.
The question i wonder is will Mankers solution with there double spring really be as good as a IOS copper beryllium spring.
If we canāt get some pre assembled switch boards, i would still order āmax ampā boards if i could though.
EDIT
This is great :bigsmile: slowly but surely (or should i say fast ) are we removing lots of barriers to modded performing lights for less here :party:
I think in this case it does not matter. The spring design is done. If you want to change to a different spring, GREAT, but lets agree that the SPEC is not really up for review.
I noticed that you had a long conversation about board design ideas (beyond my pay grade). As a request please lets not conflate the idea of the additional lit switch assembly with other design ideas.
Thanks for your support about offering the lit switch assembly as an extra option. Lets take the win, and not loose track of the mission of bringing this to BLF in a timely manner (in time for us to have/give as gifts) for our rapidly upcoming holiday (and I donāt mean turkey day).
I think you missed that i and PD clearly stated that that discussion didnāt apply to this GB, so you donāt have to worry, nothing is getting changed because we are discussing other ideas here but dosenāt mean something fruitful dosenāt come of that in the future, i think many of the ideas implemented in this GB was discussed (probably OT at the time) in many other threads. The organizers know what they are doing and wonāt get sidelined by some idle chatter while we wait for more new on the progress on this GB.
My point in the quoted post was that if a mass manufactured āpre bypassed unlit lit switch assemblyā like you suggested could be sold it would not be very interesting to order special max amp boards from ospark to build my own switch assemblies for less than a 1% gain
Can the lit switches fit other lights? I would definitely like a few. Perhaps some spare clear boots too.
HƤftigt!
Last time another great idea like this came up ReManG i think spoke to Neal & krono about doing a GB on the A6 shorty tubes, and manker did it and we got 500 sign ups in the end. And now it is a regular stocked item for the EE X6 & BLF A6, i just ordered mine.
And we can buy the BLF A6 driver at Banggood
This should really also be made, i hope someone picks it up so Manker & Banggood can sell us lots of this upgraded switches, they would be crazy not to.
We have a combined only in the BLF X6 & BLF A6 of 4200 sold lights that can all benefit from a drop in tailswitch upgrade
Good point people like options if they would offer an unlit option + and a lit option and maybe even with different colors they would multiply sales many many times over.
And also sell lots and lots of boots of the clicky kind
Lets start with just the switch assembly they are already building for now.
The future is full of unknown changes
+1 
If Neal/Banggood & Manker see a business opportunity, I am 99.99% sure they will make them available for purchase sooner or later. 
And if they don't, someone else will.
.
Iād like to see at least one mode 100% 7135, the middle mode of Muggle mode would be good. There are going to be over 1000 of these going to BLF members, many who have light output measuring equipment. I know individual LEDās will vary and 7135ās will have differences but that shouldnāt be that high.
Yes, the switches and boards are a standard size which fits into most lights.
Awesome! I want one for the A6, perhaps a convoy (not my blue ones, metal boots. ).
Perhaps a few others too.