At risk of stating the obvious and not wishing to diminish anyone's righteous frustration with geobra's designers, klickies are not meant to be pulled apart and recombined in novel ways. Geobra don't want to encourage children to pull the toys apart and create new figures, especially if the results are better than the designs their own people come up with. And collectors who want to do this must be weirdos.
Oh, hang on, the Figures series are designed to be assembled in different configurations, pulled apart and reassembled.