I transcribed this from Barrios' live recording by slowing it down in vlc. He uses open strings for the final eighth note of most bars in the first section I believe to facilitate a high tempo, which of course due to unfamiliarity with the arrangement, I'm not anywhere near here. It's slow, but I believe it's over 90% the arrangement that Barrios recorded.
"GLASSYNAILS" on Youtoob for my "no edit" - "no fakery" audio recordings. Just me, my Alhambra 7p spruce, and an Olympus ls-10 portable recorder.