Not 100% but, its a start. Post an edited or corrected version if you can.
Intro/Verse/Prechorus:
(Listen for Timing)
A C#m G Bm
------5-----4----3----2-----------------------------|
------5-----5----3----3-----------------------------|
------6-----6----4----4-----------------------------|
------7-----6----5----4-----------------------------|
------7-----4----5----2-----------------------------|
------5----(4)---3---(2)----------------------------|
Intro: w/ Distortion
Verse: w/ Distortion
Pre-Chorus: Clean Reggae upstroke (Hold the G chord, Don't go to the B on the last one)
Chorus:
D A# G 
