I've been having problems with this too. Tomorrow I'll take pictures.
Part of it, I'm sure, is that I ride a different saddle for my different lesson horses, but it seems like I can't get comfortable with the stirrups. If I drop them a notch, I don't feel like I'm getting much contact and tend to loose the right one. If I take them up a notch, I feel like I have too much weight in them. It's been Duke's saddle that's been throwing me recently, but I have the same problem with my saddle. It's like I need a notch in between.
They're both bevelins buckles, too, so just punching a new hole isn't easy...
"Sit tall in the saddle, hold your head up high. Keep your eyes fixed where the trail meets the sky. And live like you ain't afraid to die...don't be scared, jut enjoy the ride." - Chris LeDoux