This song has had incorrect tabs since the inception of the internet, so I had it professionally transcribed by the very capable Dave Taylor of CustomGuitarTabs. I have made very minor corrections/changes due to imperfect importing between GuitarPro 6 and the MusicXML version I received. I basically had to manually fix all bends, slides, hammers, etc, so there may be small mistakes. I also made a small change in Gary's first solo to include the pinch harmonic at the end. 
The only musical versions that exist are the 1976 studio version and then British 1975 Old Grey Whistle Test live version. This transcription follows more closely to the studio version, which has less notes at the end of Gary's solo. 
This version only has the two guitars. I have no problems is someone wants to add missing instruments to this and release an even better version.