One thing I've had problems with since I got my Doctor Who is the ball getting hung up on the protector on the top front of the mini playfield, usually when it's got slow momentum. I thought the tape underneath it was dried up, and finally after it hanging a few times tonight in games, I got fed up and I thought I'd take a closer look tonight.
Tearing into it, I was shocked to discover a previous owner thought super glue would be a great way to fix the mini playfield!Glue crazy! The glue was on so thick, it had spring up the protector.
Thankfully, I was able to get it off carefully with a knife and my fingernail. Unfortunately the protector was permanently sprung upwards, still leaving the problem.
Next, I took a set of flat sheet metal hand brakes and put a bit of a downward bend on the lip, which most assuredly solved the problem! Now no more hang ups! Slight downward bend