[Lazlow.]

The fact it freezes on one game alone means it's a problem with the game and not with the console. You cracking open the case and doing some DIY repairs is only voiding your warranty and not helping the matter. Like my PC, whenever I put in GTA: San Andreas the disk keeps 'clicking' in the disk tray whereas with any other disk there's no other funny noises. It was just that disk, which eventually had a clean crack down it. Stop opening your case and fixing it yourself, it's just the disk.