What was the root-stock, Gigi? Did you try to graft several scions at the same time or space them all out? I have a feeling that getting one to "take" at a time might just work, but of course, I have never done anything like that. I have only grafted to a cut-off plumeria (usually Celadine) and haven't tried to graft one (or more) to the mid-section of a plant.