To expand on shutterfinger's good advice...When I disassemble shutters, I have one of those plastic "bead boxes"-basically a flat rectangular plastic box that's divided up into compartments. Each component of the shutter I remove, along with it's associated screws and springs, goes into one compartment. When you get ready to reassemble, you just start at the last compartment and work backwards. I use naphtha, white lithium grease, and gun oil.