The pieces of "coat hanger" have to connect and "pull" the connectors in towards the unit, in order for the head unit to pull out. The ends have to have some sort of catch on them to connect with the head unit. Think of this: The piece of metal goes into the slot, clicks, and pushing them out away from each other, they allow the 'catches' inside the head unit to push in slide out. I really hope this helps....without the correct tools it's hard to explain.