I have a gi joe that his hands dry roted. So i thought i can use one of my action man for this problem. I have a couple body parts of action man that i kept around and it looks like they have the kung fu grip like the joe's but when i went to yank on one of he hands it didn't budge. are they not like the g i joes? do i need to sit them in hot water first or something? or it's a loss cause...