Accidentally removed these upon disassembly of the engine (don't know why) and now it's time for everything to go back together and I need to know the proper way for these to go in. Are the pins inserted with the open side facing in or with the pin-hole side facing in? And are the metal posts (not sure what else to call them) just placed in afterwards? Am I missing something, like a spring or something else? Or are they meant to just be able to move around in there as I placed them there in the second picture? Just moving the whole thing from side to side makes them fall out.