I've wondered about this spec oncte or twicte. For a triple, you will always have a much larger ring-derailleur space for the middle-granny shifts. Positioning the FD as close to the big ring as possible isn't going to help much. On the Tommasini I just built the braze-on FD mount won't let me set the cage that close to a compact double's big ring, and it seems to shift just fine anyway.

So about the OP's question, try re-installing just the original big ring. See if its ramps help the middle-big shift. It will give you a clue what to do next.