I'm having trouble with playing A-shaped barre chords. I am aware of three ways to play them: Normal shape, using the ring finger, and using the pinky.
But given the structure of my hand (my phalanx of both ring and pinky are small), it's difficult to play A-shaped barre chords. I can play E, E minor, A minor, and C shaped barre chords, but it's very difficult to play the A-shape. Why? And can you offer suggestions for how I can accomplish it given my hand structure?