Quoted from epthegeek:One thing I've done recently that helped with full teardowns is use a piece of foamcore to mount the posts into temporarily, in a layout similar to where they go in the playfield (but scaled down) so I don't have to remember which type of post goes where. I had it on carpet, so I just used one layer and poked them out the bottom, but if you put it on a hard surface you'd need a few layers to cover the post depth.
THIS. For everything topside, at least. I typically use a few pieces of thin cardboard, but same idea. Just load up the cardboard by punching the posts and any hardware through while keeping it in the same pattern. Maybe I'm too obsessive, but I want everything to go back exactly where it came from.
I've had instances of hardware giving me trouble unless it's going back into it's original hole. After a few of those confusing situations, I will always do things this way. Even if it takes slightly longer.