On our Cyclone we had the mylar bubbling up on the multiplier wheel which is smack dab in the middle of the playfield where you couldn't ignore it. It was a huge eyesore.
So what I did was cut them out with an exacto, sand them smooth to get all the residue off, polish them, and applied mylar decals.
IMG_20190109_125438038 (resized).jpg
IMG_20190109_125721646 (resized).jpg
IMG_20190109_150205_01 (resized).jpg
Looks 100x better, and doesn't affect ball travel at all. It's all pretty smooth.
IMG_20190109_153308088 (resized).jpg
Took a couple of hours, and was so worth it. It's definitely not perfect by any means, but on this player it's great.
Hope this helps
-Paul