I’m retracting my comments about this part. When I opened it, they were all main-screw face-up, so I immediately saw what I didn’t want. Before I set them aside this afternoon, I took a closer look, and these have been revised from the earlier type I have. Namely, they added a center screw on the other side. Kudos to them for the improvement and shame on me for not noticing (I’m on a pretty short fuse over this stuff because I was down all last week plus I’ve been getting quite a few bad order fulfillments from the rest of the internet lately)
So to summarize, what they are currently selling appears to be a combination of the two coupler styles (and actually, it would work better because the “good” style was difficult to keep true)
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