Harry, I was looking over the Mangifera casturi threads in the forum, and wonder if your tree has produced any flowers yet and how is this tree doing, also any additional input regarding this species.
Noris Ledesma was visiting the island, and she brought over some bud wood, for M.Casturi with the hopes they are able to breed a new hybrid here someday. that will tolerate heavy rains, and soils with high salt content.