None of the tabs I found sounded quite right, and none of the playthroughs on YouTube seemed completely accurate either, so I decided to give transcribing it a shot. I looked at live videos of PT and how Colin Edwin played the part, and I slowed the song down in VLC to help me pick out the notes. I've attached my transcription of the Intro and verse riffs. I'd like another set of ears to check my work, so if you don't mind and have time, give it a listen and let me know if/where I've messed up. Thanks!
BTW, if anyone wants the MuseScore file, I'd be happy to provide it.