Oh, something else to keep in mind is that the Flite phonemes do not map identically to the US English Pocketsphinx phonemes. I think that spending a little bit of time looking at the implementation of GraphemeGenerator from the library should probably point up any important differences, since I know it was an issue I needed to solve in order to set up the fallback pronunciation technique for creating a dictionary entry when the word isn’t found in the main dictionary file. It might be as minor as AX -> AH, just take a look (keeping in mind that you are doing the opposite process as GraphemeGenerator by taking a Pocketsphinx phoneme and converting it into a Flite one).