I play them in 1st position, I never used any notation so I could be wrong but basically what I do is Strum/slap the main verse but then when it falls on G I hit a G harmonic on the 5th of G then while playing the first part of the riff again, sneak a D harmonic in there, before landing on C and back with the G harmonic.
I don't know, how I play it SOUNDS fine, looking at that notation it's a little wonky, but meh, I'm not a perfectionist.
(if you want to hear how I play it check the WWW link in this post)
Also, this is a question of technique methinks, as it pertains to the technique used in a specific song, and as there are a few recordings of this song, and you didn't specify which, or any interest in the recording, I'm going to move it to technique
