Quoted from Sharon:.... mylar from my DW. So what's the best (or even the easiest) for removing the sticky leftovers?
This method changes depending on the type of playfield: Newer factory clear coated (like a Diamond Plate playfield), Williams System 11 playfields, older lacquered playfields, etc. Your DW (Dr Who) is a factory Diamond Plate clear coated playfield. So use Naphtha on a soaked paper towel. Let sit for 5-10 minutes and the mylar glue will be easy to remove.