Just remember you need a small wood or acrylic block (that's bigger than the insert) between the clamp and the insert...don't ever clamp the plastic directly. That will get it level with the playfield about 95% of the way. Don't try to just hammer the wood block without heating, and don't heat too long or you will scorch the underside of your playfield.

It was extremely minor. As in, could've been removed with 5 seconds and a piece of very small grit sandpaper... but if you really want to see an example, I could go fry the back of my old Shuttle playfield with my heatgun.

Just FYI, but I wouldn't hold my breath on this... he's starting to do some licencing stuff with Bally/WMS, so I don't think he's going to be too eager to do under the table stuff, but maybe he might be willing to tell you how he makes his own and provide you with the file and you can do it yourself. Just more elbow grease.

Removing mylar on a non DP sys 11 is a death wish IMO.

Backwards wired coils lol.....I totally killed my Pinbot flippers when we wired one backwards...think that was my second flipper rebuild ever. Fuse ate the charge, so the transistor didn't blow thankfully, but man I had no idea what had happened and was pissed off for a while until we figured out why the fuses kept blowing.