Some time spent today setting the correct angle on the fibreglass portion of the filtered air box. In my case it needed to be cut so that I could hinge the front of it down. I then got a scrap of fibreglass from the very front portion that I cut away days earlier, and trimmed to form a vee shape that fit in the gap, one for each side. I then applied heaps of resin and fibreglass cloth and left to set overnight.
Am happy with the result.
The fibreglass portion of the filtered air box is split and set to the correct angle