I'm with Strollin' Johnny and Amos: String, stretch, tune, retune, play really hard for a while and maybe tune again.

I don't know that the thing with "let the strings get to know the guitar - put them in the dark and let them 'bond'" thing isn't just a ritual. Whatever works, though.

The one thing that I KNOW causes tuning to be a real pain is when I leave too much excess string wound around the peg, no matter how much I stretch them when I bring them up to pitch. It seems to take forever for the slack to pull out.

Thread reminded me I need to order some more Newtone strings!