Hi Al. Good questions, and I'm afraid somebody else will have to answer. I have always found notating timing impossible and when I translate these pieces to tab, I use
GuitarPro. I just screw around with it until the playback sounds as close to the real thing as possible. In GP, there's a little icon that turns green when the bar adds up to 4 beats, and that's good enough for me ... I just keep fiddling until that happens.
I'm sure that there must be a better way of notating it ... hopefully someone else here will be able to give you a better answer! Meanwhile, if you listen to the midi, you'll hear exactly what the tab sounds like, as they both are generated at the same time. Listen to the real version too, of course, the movie, as that is always what I'm trying to duplicate. I play first, then tab later.