Theres a max amount of mods possible on a single item. Also, there are some mods that cant both be put on the same item (examples fail me, but Ive tested this out). jamella tends to do this quite often, not so much with the other editors. If youre using zonfire, you were probably messing around with the hex item editing section :S My suggestion: dont. Use horadric to make the items, export to a d2i file, and then import with zonfire.