I just read this thread so I'm late in congratulating you!

For what it's worth:
My cockatiel, Jackie, walked on her "wrists" rather than on her "fingertips." As a result, she would rub herself raw on the part between the "wrist" and the "elbow" (did that make any sense?). The vet we took her too told us to use dow rods as perches and cover them in Dr. Scholl's moleskin. She still walked on her "wrists" (it was genetic) but her wounds healed quickly.

Maybe that's a "trick" you could keep in mind, should this wee one's right leg rub on the perch.