@JimWoodhead do you have a sample of what it looks like? Sounds like you have the barcodes showing for the characters in the barcode #2 below but not something past that #3-5. When you created the barcode formula how did you do it? You might be using the wrong formula that isn't calculating the information correctly to work with the azalea barcode font.
A Code 128 bar code has the following physical structure:
1) Start code, which is the code 103, 104, or 105 from the encoding table below (either 11010000100 (Start-A), 11010010000 (Start-B), or 11010011100 (Start-C).
2) Each of the data bytes of the message.
3) The checksum byte.
4) Stop character of 11000111010.
5) Termination bar of 11.