I noticed a lot of people trying this method have newer playfields and wanted to post how it went for an older playfield: 1979 Williams Time Warp

First off the flour/alcohol method in the video didn't bother the 35 year old mylar glue very much at all. I then tried the Goo Gone spray gel and that went much better. What I did exactly was put a small amount of flour in a cup and stuck my pointer finger in the cup and patted off the flour on the adhesive. Next I sprayed some of the goo gone spray gel into a shot glass and did the same technique of dipping and patting on top of the flour. After 4 minutes I came back and did the finger pat maneuver with the flour on top of the goo gone and from there I started to roll the crap out of it with my fingers. I still needed to do a good bit of rubbing but the adhesive came off relatively easily and the fresh playfield is exposed and clean.