Thank you for the response. I think for now I will stick with my emulation approach, where I set-up fldigi to Ray 152, then use Python to do the conversion. After spending a couple of nights tweaking it, it seems to be working quite well. I will continue testing and cleaning up the code. Once satisfied I could share the python file with the group and I believe it would be fairly easy to make the change.
Thank you again,
Vassil