Wow never noticed that before......yeah maybe it went out of tune or maybe he planned on changing deliberately. As for Always, Richie obviously doesn't play for ages until he comes in on the second verse. Also he has taken his jacket and glasses off so I think it was planned to swap at that point. I guess it's similar to Born to Be My Baby during the Bounce tour when he'd start the intro with guitar number 1 then change after the two notes on 'Rainy night.....' then have guitar number 2 ready for 'Our love, our life....'

Dave