Hey Mike, I've been working on Knockin on Heavens Door and in Guitar 1 part I think you transpose the Am and C chord during the second slow play along. The notation starts off G, D in the first bar and then Am Am7 in the second bar. but in your second slow play along I think you are playing G, D and C in the second bar. It's confusing. I've been lost before what am I missing please.