Doing some more digging on spring/pin/spacer mods on the new style 2 spring assembly.
Shims/spacer inside the BAS was found in an older post on this forum.
Then on another forum
https://www.in-depthoutdoors.com/com.../#post-2005838,
a brass spacer in place of the Key Ring washer to add spring tension and keep the two springs aligned.
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He did not use the thrust bearing kit though.
I think this undercut internal shim/spacer is a good idea (see sketch above).
Removing the 0.055" ring, adding about 0.080" to 0.100" for a internal brass spacer plus 0.175" for the thrust bearing, but at the TOP of the stack inside the BAS, adds a total of 0.200" to 0.220" to the inside. Adding the 3 piece thrust bearing to the top of the internal stack is done with the single piece pin with indicator, single spring Lift Kit.
You could sand down the 'Kit' 0.200" spacer just a little or a different brass spacer thickness would (maybe) help keep the dual springs aligned, and increase spring tension a little.
Using an external spacer that guides on the BAS threads (greater than 0.140") would fix the 'Floating Spacer' issue.
Sounds like an easy to do mod, in brass, aluminum or even titanium :)
The NEW stack would be firing pin, spring #1, undercut internal spacer, spring #2, 3 piece thrust bearing, external BAS spacer, BAS.

One of the 3 piece thrust bearing kits being sold (for the old style pin) has a race that is undercut to fit inside the cocking piece (like the 357 mod, sort of), but a plain race at the top. Two undercut races could be made to fit in both springs to keep them aligned.
See any problems with a dual race aligning thrust kit for the two spring bolt?
Other than buying two kits and stealing the undercut races.
The undercut would have to be made to fit the springs instead of the cocking piece.
An additional internal shim inside the BAS and/or thinning the BAS spacer could be used to fix/adjust spring tension of the new style 2 spring bolt.
From the Desh website:
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For now, we will try my current stack and see how it does.
But, it looks like more experimenting in the future :)

One thing for sure,
if you don't balance internal stack length and external BAS spacer thickness you will impact spring tension
.