Not sure who is producing the playfields for Heighway, however recently I just had a major issue with my Alien. A small piece was chipping around the magnet, which wasnt a huge deal, it happens, so I ordered a cliffy ring to cover and prevent more damage. Upon removing the mylar around the magnet to install the cliffy, to my surprise more than just the mylar came up, a 2 to 3 square inch section of the clear peeled right off! Came off super easy like peeling sunburnt skin.. Obviously the clear has very poor adhesion, not sure if I'm just 'lucky' or if it is common on all playfields produced. Just wanted to warn guys not to apply or remove any mylar on these!
Happily the art is intact, now I'll have the treat of having to get it re-cleared