I read that posting. The guy says to:
You will find four screws that holds the face onto the gauge,remove those and remove the face.You should now be looking at the LCD screen and the crinkled up film,use a straight edge razor blade and carefully remove all of the old film.
I can't find four screws anywhere. I hope they are not inside the gauge body. I can't see in there at all.
I purchased new film. The guy that sells kits is on an extended leave and is not responding. I wish I had his directions!