Interesting. Personally, I find that the wound strings (G & D) are more finicky when it comes to tuning than the unwound ones (A & E). I never have too much trouble with the unwound ones. Couldn't tell you why that is though, except perhaps that the texture of the wound strings (due to the winding) could make them bind on the bridge and/or the nut, whereas the unwound strings wouldn't. Hmm...
"Aerodynamically the bumblebee shouldn’t be able to fly, but the bumblebee doesn’t know that so it goes on flying anyway."
Newell A5 #37, Glenn F5 #66, Eastman 615 #537,