Midnight club 3 and remix

I had a problem with gran turismo 4 it kept freezing so i decided to open it up and clean the lense how to clean lens....... 1. unscrew 8 screws 4 of them under plastic tabs (they lift of with flat screwdriver 2. take or cut the void sticker on the ps2 3. lift it open 4. where the disk goes in there is a plastic plate on it with 4 screws undo then and with a clean tisue gentaly wipe the lense 5. put back together ps its not my falt if your ps2 gets damaged in any way while opening it