OK, maybe. But I note that some of the presto removers have no central plunger. This is simple for me to understand. Just use a dial protector, get the remover claws beneath the 2 hands, squeeze and gently remove the hands.
In my presto #7 tool, what should the central plunger be doing? I don't have the thing in front of me now, maybe I'll go home later and take a few pics.