You'd be surprised how nice you can get BOP Play fields looking after just a few hours of elbow grease. Like removing the factory mylar with freeze spray and the left over glue by using soaking it with Goo Gone and using all purpose flour to rub it off, then hit it with a bunch of Novus 2 and top it off with a few coat of carnauba wax and you will have your self a stunner especially if you installed LED's.

If it wasn't super late Id send you some before and after pics of mine or just search my name for the after pics.

Cheers

I don't think you will run into catastrophic problems when removing the factory mylar off a BOP.

If it was an older game like from the 70's then I could see room for concern but BOP was built in 1991. The few areas where I saw mylar bubbling the insert decal was still adhered to the insert instead of it being adhered to the mylar. I watched a few youtube videos on removing mylar using 2 cans of Dust Off flipped upside down and slowly pull away at the frozen areas that easily come off. I started the removal by finding a loose corner and spraying under that and on top of the whole area you could also start the process by slicing into a bubbled insert with a very sharp razor type blade and shooting the spray into there enlarge the hole and shoot more spray until you find a loose section and start going at it like in the videos.

Mine came off all in one sheet. I took care of the left over glue by soaking it in Goo Gone and then returning 15 minutes later with a little bowl of all purpose flower and start rubbing the glue off with the combo of rubbing the flour on the goo gone soaked glue with your flour covered finger and it magically comes up with the aid of more goo gone and flour, but this has all be discussed in other threads.

I did this as a total pinball newb (I was in the hobby for less the 6 months at the time)

Before (see the mylar bubbling up under the hearts)
IMG_1971.jpg
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Bare play field (Before waxing)
IMG_1871.jpg
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See the ball wear by the in-lanes, well you wont notice them once you assemble it and light it up with LED's
IMG_1825.jpg
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One of my first rounds of trying out LED color combo's, it looks different now
IMG_2387.jpg
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Taken early on with the game lights off, maybe after first round of Novus or something, but you can see how well its turning out.

IMG_1788.jpg

Thanks for the compliments, you wouldn't believe how many trial and error bulbs it took me to get a look I was happy with and I'm still not done. When I do my playfield swap I'm thinking I will keep the colorful inserts but make the bride more of a sunlight/warm white color.

As for the mylar I had good luck spraying it under the mylar and then on top and then back under to get what seemed like only 1 or 2 inches at a time. I left the mylar around the pop bumpers because they looked fine.

I'm sure I used this thread
https://pinside.com/pinball/forum/topic/least-damaging-way-to-remove-mylar