Okay, fine by me.....I'm easy.
So think Ed's hex print where the clutch is proud above the plate.....then think my hex print where the clutch is below the plate.
1. Buy a couple of square nuts. (since you have the square recess, that means they won't turn when you tighten the bolt on the bottom)
2. Buy flat head machine screws (since your bottom hole is chamfered) and get them long enough to go past the clutch....you'll see why in a minute.
3. So now tighten the bolts and square nuts until the plate is tight enough to resist light turning pressure.
4. Then mount the "Handle"
5. Then use your nyloc nuts on top....holds the handle on keeps the bolt from loosening. Done.
Oh, here's the handle: (just overhangs the hole, doesn't go into it because some plates like Ed's is lower, and others like the #11 is higher.)
Here's a picture showing why square nuts.....
Now you can keep the plate and the clutch as one easy piece to drop in and use. So you have to print a clutch for every plate.....big deal. Ok if it is a big deal then don't store them together.....still works the same....just less handy. (no my screws are too short...got to get to Ace tomorrow to remedy that.)