Failure - Pillowhead

I don't think the verse tab is correct, although it sounds close.  
If anyone knows the correct way, please let me know.

Tune down all strings 1/2 step (Eb, Ab, Db, Gb, Bb, Eb)

Key:

' = Pull-on/off
~ = Note is played more. (Tabbing it would be a waste of time, 
        just figure out how long it is played on your own.)
(2) = Natural Harmonic