So my first issue I came across was Soul Calibur 2. The game had a Mismatched ID and of course I went and ripped it again and now it works. I've now recently came across a RE2 mismatch and haven't had the time to test it out thoroughly. My question is are some Mismatched ID's bad and others Non-Harmful? I've been going through a lot of my games and quite a few have Mismatched ID's however I've played them without any issue. For instance Twilight Princess on GC has play flawless for me even with a Mismatched ID. On the other hand RE2 and Soul Calibur 2 have given me issues with wrong ID's. Are some harmful and others non-harmful?