Little Walter's 'Can't hold out much longer'

Thanks for the Little Walter licks – very cool. I’ve been trying to figure out the opening to ‘Can’t hold out much longer’. If you’ve got time, can you tell me if I’m on the right lines here? I think it goes like this:

Very quick slide to 2 draw, followed by bent 3 draw to 1-4 blow, 1-4 draw, 2-5 draw, syncopated 3-6 blows. Then down to 5 draw, quick slide to bent 4 draw, 4 blow, bent 3 / 4 draw and ending on the 2 draw. All of that three times, then 2 draw, bent 3, 4 blow, bent 4 draw, then 4 draw bending down and up again. Finally, he rolls down to a bent 2 draw, but all the notes in between are too quick for me to pick out! I think it’s bent 4 draw, 4 blow, bent 3 draw, but can’t be sure.