So, on the OTHER end of the saber I made some headway.
It looks like the endcap is screwed up on Dagobah. For sure it's screwed up in the 90s during the Magic of Myth tour, and that means most likely it was during Jedi filming. If
IronDestinyProps doesn't mind, I took his photo of a recent project, cropped the real prop comparison and boosted the contrast to show what I see.
I have always seen a very thin rim around the endcap. That is....
underneath what I will call the "kobold plate"
So in essence... I see it in layers
1) Thin Graflex wall and filled endcap space
2) Kobold Plate and a washer? near the center
3) Kobold D ring and possibly the original rivets, lathed down
I have never been able to fathom how the wall could be so thin. The Graflex itself is almost 1/16" in thickness and then today.... an idea struck me. Where is the graflex wall thinner? Why... where it's milled for the endcap to sit! I sacrificed a 2 cell bottom to learn about the cross-section myself. Sure enough, I found a lip thinner than T track.
At this point the Graflex started to look like the DV6 but I couldn't find the seam-line of the endcap and wall!
so I dropped one of my metal files, handle down in there, and whacked it with a wooden mallet. The cap fell out.
I almost think they put the endcap back in place. Maybe upside down? Maybe the hand-cut "kobold plate" is the original endcap but flipped? I'd love to hear people's thoughts