I think I know what you're getting at here. I have tried to push the inner U of the plate so that the head/seat block protrudes through the middle somewhat however the U shape doesn't appear wide enough for it to fit.
I don't want to force it or shave it so it does fit. If it were a newer figure I wouldn't mind attempting this.
Thanks for the response liege. At least I know I'm not going insane![]()