I think I can .
I have two of these caps.
They are over a year old .
One of them is on my daily driver .
The scoop ( "digger outer " ) of these caps is longer and somewhat more narrow,
than the scoop of the new ones.
It extends almost to the end of the tip.
Also the "clickers" (bimetallic discs ) must be different versus the clickers of modern caps.
I've noticed two main differences with the new cap's clickers,so far.
The first one is visual.
When I clean with baking soda the old cap ,the clicker at the bottom is blue tinted.
At modern caps has a rather golden hue.
The other difference regards their operation.
Maybe Dynavap changed the brand / supplier of the clickers at some point along the way.
But the new clickers are more "stubborn" to click both while heated and while cooling.
The old ones were much more responsive.
They may be of same temperature specs ( "Break " and "Remake " temperatures ** ) ,
but their time response seems to be way different.
An analogy with electrical fuses :
Old clickers where like the "Fast" ( F symbol on fuses ) acting kind .
The new ones are more like " Timed " ( T symbol on fuses ) kind .
While the rated "amperage " remains the same .
If you ask me : I prefer the old caps.
I tend to scorch the load quite easy if/when I use any of the new caps.
With the old caps there's not such an issue ,at all.
Also ,the ABV is darker ,while using the new caps under same heat cycling vs the old caps.
And I have just two of those old caps only !
While I 've a bunch of the new ones ,which I almost feel reluctant to use ,
knowing how much
better ( or at least they suit better my style of Vapcapin' ) the old ones perform .
As a side -and personal point of view -note ,I have to confess that I surely miss some previous
-and by now obsolete -VapCap parts ,like the brick red silicone o-rings ,the original 4th gen / 7 fin Ti tip (great for using outdoors,without being so F@(kin' slow like the M (SS) tip )
and of course those old, long-scooped ,super responsive caps .
Being the only few things, that Dynavap should 've kept them available ,
at least as alternative options to VITON o-rings ,5th gen Ti tips and short/wide scooped modern caps,respectively.
BTW : Great Work! Excellent workmanship !
Cheers.
**
(...)
The bimetallic shallow shell performs a snap action at defined
temperatures and produces enough force to open or close electrical contacts. The temperature
at which a bimetallic shallow shell “snaps through” on heating is called the “break temperature”
and the temperature at which it “snaps back” on cooling is called “remake temperature”
(...)
https://www.researchgate.net/public...TATIC_CONTROL_AND_OVER-TEMPERATURE_PROTECTION