I've found the best way to get those sheets off is peeling them flat to the box. It's pulling them upwards that causes the bubbling. Just got mine off GitS without issue, it was the BBFC stickers that caused me more grief. Of course that will wreck the info sheet, but I bin those anyway.Pro-tip to anyone getting the SAC set: be careful when removing the info sheet from the back, there are five dots of glue holding it, but it seems to be stronger glue than the likes AL use. You're probably at the very least going to end up with some bubbling on the back of the box.