My wall power outlets at home do not have a center screw. Some 6 way splitters have a center hole so you can secure it to the outlet such that it won’t pull away when you unplug something.
So I made this. It uses the existing screws from the wall plate.
I think I understand the problem, but I’m not a yank, so I don’t know the type of splitter you’re using/talking about. Just wanted to see it without, to better appreciate the design.