Dang it, man. Cutting and pasting those buttons could not have been an easy thing to do. Do you have some clever way of making it less tedious?
Yes, it is a VERY tedious job. Unfortunately, I do not have any way of making it any less tedious.
The best way that I have found to do this, is to start with attaching all of the base panels first. Then go through and add the buttons (one panel at a time). That way, you get the nice layered effect.
I would also suggest only doing two or three panels at a time, get up and walk around (do something completely different for a few minutes, like getting yourself a cup of coffee.), then go back and return to the project. That way you give your eyes (and yourself) a bit of a break (and you will not make any mistakes).
Good luck with your build. I am looking forward to seeing how it will turn out!!!