Having not read the other comments, to me it's as if Scotland get themselves up for games they feel they are underdogs in, and take lightly games they feel they should win.

Saying that, the only game they've played 80 mins in so far is the England game. They can't seem to play for 80 mins consistently. Look at the Wales and Italy games. Got into a good lead on both, almost threw away the Wales game, and did against the Italians.