Originally Posted by Anon La Ply
Does anyone know about the intervals he's using?
Your best bet is to find a copy of the "Star Licks" video he did, he discuss such topic as tuning in it.
Star Licks http://www.chetmccracken.com/StarLicks2.html
Star Licks sample http://www.youtube.com/watch?v=XxCGZ-9mm5A