Does anyone know how to disassemble the hips on G1 Brainstorm? I'd like to give one that I have a H202 bath due to some mild discoloration, but I have no idea how to first remove the legs to prevent the metal from corroding. One pin goes straight through both legs and the entire width of the body. I attempted to knock it out like any other pin, but was not successful. I was a bit timid with the hammer just in case it wasn't the correct way to remove them. I can take and post pictures if it would help. Thanks.