I've bought a Ripley's Believe Or Not! pinball and I've noticed the head magnet is a little bit mushroomed. There are other topics about this, but I didn't understand if simply replacing it by removing the old 530-5320-00 ("Threaded Core Plug") and installing a new one is enough.
Sometimes the ball stops there, but it works most of the times.
Could you please help me to understand?
As you can see from the image attached, the playfield near the magnet is also a little bit damaged, do you think it can be repaired? How?