I always found the picking pattern between the two high notes and the open A is pretty natural and simple, I never saw what the issue with it was, the only issue with that whole bit is the hand move from the bottom to the top the first time, but once you have done the first one and your hand has remembered where it is, all subsequent ones are not really an issue. Which is handy, as normally in that bit someone decides they want to talk to you for some reason. Often the singer.