Our Instructor, Osbaldo Resendiz, helped us by providing a parsed version of the model he created for the FBA of nodulating R.etli. We are currently going through the data to understand what is contained on the huge matrix.
The other code I was generating will be on stand-by for a few days, however I plan on finishing it.
As a side note, the matrix generated by Osbaldo appears equivalent to the one generated by my code. This might be a good validation.