EZ,
I've been playing that tune for a long time. I heard his Newport folk festival version and fell in love with it on first hearing. I later got Grossman's book and tape Rev. Gary Davis/Blues Guitar and learned a bunch of the tunes off it and realized that a lot of the licks and inversions he played in S&D were contained in these other tunes,so I just grafted them on to what I had and keep adding to it. I certainly can't play it like RGD did but then that's why he's RGD. Learning some of his easier pieces might be good ground work. Good Luck, F