I have that pinball machine. It's a fun game but so you know the skill shot switch has a tendency to get bent out of shape and the ball gate that is supposed to hit it to activate it will either no longer make contact or make contact and get stuck "up".

Ps if you want to sell the ball gate let me know as I am looking for a replacement

By the way, I have some slight bubbles under the mylar too. I wouldn't try to remove it as you'll probably end up taking a lot of the paint off and ruining the art work.