I just did my first scrub of Ghost Squad (an old Wii rail shooter) using the ISO setting. I compressed it with 7-zip in ZIP format using default settings. I used WiiScrubber 1.4 I get 757MB scrub. The predicted scrub size for this game I found using this site and Google is 1.3GB (Wiiscrubber 1.0) Why is my scrub so small? Is it because of the newer WiiScrubber version? BTW - Tried extracting and burning and it seems to work fine. Also, the reason I'm so curious is that I'd like to scrub up a lot of my games in the future. I'd like to contribute to the GBAtemp wiki and post my scrubbed sizes. But if I'm getting unorthodox sizes I might do more harm than good.