I've just today got masterpiece prime for my collection, finally. The only problem is I don't read japanese. When i tried to transform him, i couldn't get his legs to retract into the blue lower legs. I looked up the Hasbro instructions and they seem to say press in on the oil drums and push the legs up. Mine just won't budge. Do i need to be very forceful? Is this a problem everyone had or am i missing something?