I had two nursery-grown Sapodillas, one Silas Wood and another Alano, from different sources, but both had/have very ugly grafts, with cracking bark and bulging of the trunk in the graft area. The Alano fruited and then died (in a container -- I shouldn't have let it); the Silas Wood is doing fine but still has a really ugly graft. Is that normal? I've been wondering whether air layering would be a better option.