I used the gloves as recommended and it took just under an hour to break it down. Just over an hour to rebuild it.

Patience is the key and read all the instructions, they really are excellent.

Also, use the screw template and personally, I used "Magic Tape" to gently tape down each screw into it's coloured circle so they couldn't get knocked.

In my case (a launch day iPhone 4), one of the screws in the large EMI shield was captive. Other than that it was exactly as described