I discovered to day after looking closely at the Jabiru installation photos that I seem to have been supplied with the wrong ram air ducts, you notice in image 3 that the ram ducts only cover half the inlet. In the installation photos, the ram ducts fit the cowl inlets completely. I'll give Jabiru a call tomorrow and chase them up about this.
Left view, cowl held in place with hinge and cleco's
Right view, cowl held in place with hinge and cleco's