Hmm, I can't find that screenshot! Got a time in the video?
I will say I noticed a few more things...
1) the sound is increasingly tinny and rattly when it comes to sword strikes in ESB and then in ROTJ. It does sound like wood whacking in the warehouse, wondering how they rigged those up.
2) the ANH stunt I don't believe ever got black bolts, its used extensively in ESB for fencing, maybe using the same grub screw it used for the original bearing.
3) I've seen some ESB graflex shots where I can't see a black bolt. Looking at the ROTJ MoM vader saber I would assume some of those are ESB era bolts, maybe there was just a bolt on one side? back?
4) Hoth scene used the stunt with pinched bunny ears!
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