wow!!! all that shiny metal! well done! now how the hell do you know where everything goes back ? 
I'm up to around 107 photos of the playfield (top and bottom) alone. I only post the "good ones" - not the photos of the screws lined up with a caliper next to them. I've done enough EM's to pretty much know where most of the generic parts go.
Steppers and DT banks are also easy and like most parts of an EM - it is all logical and physical - so you can work out how each unit functions very easily. That's why I love EMs - tangible and logical.
