gcode converter to make Cura dual extrusion work with Sailfish

I use Cura 15.02.1 as a slicer... But I have a dual extrusion printer running Sailfish (7.5) firmware too. They work fine together as long as you only do single extrusion. If you move to dual extrusion you will quickly realise that it will not work... and perhaps you will even look for alternatives to Cura.

The problem is that:
- Cura handles dual extrusion E-values as a combined total.
- Sailfish handles dual extrusion E-values a total per extruder.
This results in big blobs of pl