Atmosphere - Pour Me Another Chords & Tabs

this is the part done on the keyboards, translated onto guitar as best i can. its the 
riff all the way through the song with a slight variation at some points.
atthedrivein75@msn.com

e|--------3-5-3-1---|--------3-5-3-1---|--------3-5-3-1---|
b|----------------3-|-3-x-3----------3-|-1-x-1----------3-|
g|------------------|------------------|------------------|
d|-3-x-3------------|-2-x-2------------|-2-x-2------------|
a|-5-x-5------------|-3-x-3------------|-3-x-3------------|
E|------------------|------------------|------------------|
[ Tab from: https://www.guitartabs.cc/tabs/a/atmosphere/pour_me_another_tab.html ]
e|--------3-5-3-1---|
b|-3-x-3----------3-|
g|------------------|
d|-2-x-2------------|
a|-3-x-3------------|
E|------------------|

thats all of it, then the variation at the end of some of the fourth bars is...

e|------1h3p1p0-|                        e|-3-5-3-1---|
b|-1--3---------|                        b|---------3-|
g|--------------|                        g|-----------|
d|--------------|         Instead of...  d|-----------|
a|--------------|                        a|-----------|
E|--------------|                        E|-----------|


thanks.