Nice build! I put together my own FAL from an STG58 parts kit and an Entreprise metric receiver many years ago. I never got around to refinishing it, which is what I'd like to do next. My build wasn't as extensive as yours however. Fortunately, my barrel timed correctly on the first go, and the only thing I had to do was set the headspace. It shoots fine as is but is butt ugly.
You can see it here, 3rd one from the right:
http://jamespaulsarte.com/temp/weapons/26871786.jpg


