take them out, gently pry out from above the topside. Clear, then carefully redrill the holes with a sharp bit to remove any clear that got in the holes. replace the guides on the field.

the holes generally do not go all the way through for wireforms. plus if they do putting a punch up through the hole will likely make the hole bigger, which would be a major problem. Like mentioned above a small piece of wood, even cardboard on top of the PF, screwdriver goes under the wireform and on top of the wood (so you don't dig into the PF). Do this near each end, not in the middle. safest to lift one side a bit then the other and go back and forth walking it up and out. Rather than pulling one side all the way out and risking bending the wire.

no adhesive, press in by hand to start. if you cant go all the way by hand (likely) use a block and a hammer, lightly, to tap them down

you take off the biff bars the same way, just use a really thin block to get them started and use a very small screwdriver to get started. The wood wont split putting the wires back in, the holes are already there. just drill them to remove any clear that gets in them, do not make the holes bigger.