I have Googled to look for similar problems but haven't come up with anything. This has just started happening on my JP. When you shoot a ball to the Control Room or Bunker, the VUK keeps firing, after the ball has been kicked out. I had a look under the play field and it looks like the Bunker switch is slow to react. When pressed down it pops up slowly after a second, whereas the Control Room switch immediately springs up. Here's a video to show you what I mean:
Do I have to replace that switch?