Third time's the charm. This version uses a 5x, 3y offset, preserving the wingtip. I've also moved the skeleton gryphon's wing so it emerges from the shoulder similar to the fleshy gryphons' wings, no longer obscuring the avatar's face. Now I'm done for reals; more expert pixelists can tweak from here ^.^;
Implements @baconsaur's revised placement of wings for Gryphon mounts. Avatars now sit behind the wing, which protrudes from the Gryphon's shoulder facing the player. There are further fixes to be done, but this should get us closer to the artist's original vision.