Quoted from crwjumper:
I’ve had the heavy duty Mylar that is on the magnets - not surrounding - peel up for both magnets. Anybody else seeing this? JJP support is awesome as always and is sending me new mylar. (Thanks Steve Z.!)
There was a post a while back that recommended cutting out the bit of Mylar that actually covers the magnet. I used an xacto knife and haven't had a problem. Need to do the theatre and the drone one. Found it easier to do it from underneath the pf. Best to do it as soon as possible so there is not to much sticky stuff on the magnet, but you can easily get that off with Citric acid anyway.
Jjp should be using Mylar that already has the hole cut out of it - maybe they'll change eventually.