Check out this awesome new method I just learned if you have the wrong size rubber on hand or an old stretched rubber. All you need to do is take a couple of deck screws and drill them into the playfield.....
Just found this during the tear down of the Jurassic Park I just bought. I almost can't believe it. I am sure you people who buy, sell, and restore machines all the time have probably seen worse but this was unbelievable to me!