Horrible tab. The maj 7th triad you provided is dead wrong. Its not major because the 7th note in it is flat thus making it a 7th triad!! The chords are dead wrong too. Its one of the most simple things in blues, a 12 bar in the key of G! Why would an Fmaj7 be the first chord in a song that's in the key of G?!? Why you put the G#6 and those minor chords is beyond me. That's in the Allman Bros. version, and if you actually listened to the song before tabbing it, you would realize that. Finally the guitar riffs you provided are not in this song! You didn't even listen to this song did you?