This is how the original model was made:
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But in the photo below are balanced pieces from the Sealab. See the little nib on outer left and right of each side? That's what I was going for. So in order to make it look like right, I added the little round saucer plate at the bottom to the piece on the left:
View attachment 1690436
Like so:
View attachment 1690438
and then cut off one of these guys from another Sealab piece:
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So the result is almost exactly like the original, but modified "just" so slightly enough that it gives a better sense of balance:
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You can see/notice it when they're placed side by side like this. When they are spread out on the far port/starboard side of the upper mandala engine deck, it won't even occur to you that it's different. Or at least, that's my thinking as I make these subtle edits. I want it to be "authentic" and "original" but I also want it to be a sort of idealized version of a static model made for display, rather than a movie prop made in the usual rushed "over-budget-and-behind-schedule" mode.