Here's some more pics for you.
It shows the bass and tom mounts and how they fit together with some shots of the posts and receivers.
On the tom mount there is a clip that applies pressure on the post via a tension rod-looking screw.
There's no clip on the bass mount.
I shot a pic of the wing screw that tightens up the d-shaped down tube.... There should be a memory-lock clip on the down tube....
I pictured it separately.
You can see too, that the posts for the toms don't extend past the bottom of the mount, so there is no need for a hole to be in the shell for the post to pass through, as there would be for a single set-o-matic tom mount, but that's another story.
The set-o-matics have been criticized for their limited positioning possibilities.
I think that's true as well, but a lot of it for me is what one is able to get used to ergonomically speaking.
I've got eleven set-o-matic set-ups for various outfits.... they are all 35 to 44 years old, so I guess they are a pretty well-functioning piece of hardware if cared for properly.
You'll notice the down tube can get pretty chewed up from the wing screw if the height is changed a lot.
Best to find the sweet spot, set the memory clip there, and leave it.
The good news is that the damaged side of the tube faces the drummer, so it's visually audience-friendly.
I'll have to post the last three pics in the following post.