Securing the cowl scoops is one of those little things I needed to complete .
They are held in place on the Jabiru with a very basic looking arrangement which I guess works. A small wire passes around the cylinder head fins and comes uppermost where a small spring hooks onto it. This then stretches to hook onto a small 5mm angles bracket with a hole in it that has been riveted to the fibreglass scoop.
The whole setup obviously wont go anywhere as the top cowl makes sure of that .. but, in addition, you slacken a few of the rocker cap cover allen bolts and insert larger washers to encompass the scoop. I ground down the edge of a few of the washers to enable a flush fit.
Final bit will be to fine trim the front end of the scoop and fit the rubber gasket to prevent air bleeding around the intake and cowl.