It is a tough decision when the mylar is simply too stubborn to lift. Sometimes, you have to "cut your losses" and trim as you have done. Sometimes, you need to walk away and have a think about whether you want to keep going or not. I've had some luck on stubborn myla by removed from the other direction - sometime the change in direction can help - so instead of peeling UP, peel DOWN.
However - if you are happy leaving it as is - then leave it. Just trim and leave. Waxing over the area won't hurt at all !!
Remember when cleaning the playfield - don't spray any chemicals directly on to the playfield - spray onto a rag, then apply the rag to the playfield.
Jeep the updates coming !
