I am building an arcade machine, and a good friend gave me a Mitsubishi 93sb crt monitor, which is great, but it has a "little" problem. The screen coating, called G-WARAS, is cracked. It was cleaned with some substance that disolved the coating partially leaving it looking like a cracked window. Do you guys know how to get rid of the coating completely? I have tried alcohol and acetone but both have no effect. Thanks for your help.