The problem with the BIN tools is that they're not really compatible. Within the BIN format there're certain tags to specify which type a class member is of, and some BIN tools simply don't support all tags (probably because the author did not know all of them - which is a SHAME for a community like this; if just everybody would tell what he found out, we could make a lot better tools). Anyways, when you decompress a BIN, some information will usually go lost, and so it won't be the same BIN again even if you compress it.