Don't know if this has been said already, but...A must add to your machine if you have side mirrors is the peel & stick on felt. You stick it onto the wood sides of the playfield. That way there is a nice thin felt cushion there to prevent scratching. I don't even have mirror blades but added the felt to protect the paint on my SP and TFLE and the stuff really works well. Great adhesion and protection and only took 2 minutes to install.
Here's where I got it. Just scroll down to the bottom of the page link. This is a MUST have.