Yeah WTF??? I can't upgrade the KT-4 wonder weapon in Zetsobou No Shima. I have all the parts (Giant Spider Boss Tooth,) Underwater Plant from rainbow water and the liquid divinium thing from the skull underground (when you electrcute your shield.) I have all 3 upgrade components but still wouldn't allow me to upgrade the weapon! I tried having the KT-4 out and went to both tables but still didn't work (it didn't give me the option to hold square. Somebody please help!!!!!!!! Am I doing something wrong or did they add a step or something????? This is quite frustrating!!!