It is suggested that the hinges be glued and riveted. So that the glue gets a better grip, large holes have to be drilled between the rivet holes. I decide to drill a bigger hole every two intervals so as not to weaken the hinge too much.
Then I countersink the rivet holes on the cowls (not less than 124 holes).



As I will glue the hinges another time, I begin by preparing the camlock strip. The rivet holes have to be drilled using the template included in the kit. Nothing difficult but again a lot of drilling (33 camlocs, so 66 rivet holes).

I begin by preparing the side piano hinges, I leave them a bit too long for the time being. I drill the rivet holes every inch.
The holes are deburred as is usual.



Then I drill the pilot holes for the screws in the inlet area. The holes will later be enlarged for the screws.



After some more tweaking of the gaps between the different parts, I can begin the match drilling of the lower piano hinge. Nothing difficult here.



Then I drill the upper hinge. Antoine came to help me light the interior of the cowl so I could make out the pre-drilled holes in the hinges.



Next time I will have to countersink the cowls, glue and rivet the hinges and then drill to final size the camlock holes.

The afternoon was spend tweaking the cowls. First I reposition the upper cowl, the gap with the spinner bulkhead is looking better.
The I reinstall the lower cowl, work is quite slow as I iterate to the final position by sanding only small amounts each time.



Then the cowl gets drilled on the bottom and the sides.



I still have to install the piano hinge that will connect the upper and lower cowl, but before I'll have to sand a gap between the two halves (approx. 3/32").

Before cutting the cowls, I begin by countersinking and scalloping the camlock support strips.



And the result after quite some time at the bench grinder.



Then I begin the lower cowl installation. The picture shows the first cut made yesterday on the lower cowl and it allows to insert the upper cowl.



Then the cutting goes in with first the lower parts and then the sides. Some tweaking to be done before I'm satisfied.



The picture shows a problem that appeared after the lower cowl was installed. The gap between the cowl and the spinner bulkhead is not constant and is at minimum.
The bulkhead is not really flat which is part of the problem but I might also slide the upper cowl slightly back before adjusting the lower cowl.

Some internet browsing brought some answers about what has to be done with the cowls. I'm not really sure hwo it will look in the end.
First I use a ruler to mark the upper cowl's position on the exterior faces of the lower cowl.



Then I sand the interior of the upper cowl where it meets the lower cowl. The quality of the fiberglass is not very good compared to the wheel fairings.



After a few tries, the hole behind the spinner is looking round. On the pictures some 1/16" are still to be sanded.



Around the spinner, I have some problems with the joints. This one is not straight.



And on this one I have a 1/4" gap. I'll leave it this way as the sides of the cowls are still overlapping. I'll wait till they are cut and see what can be done.



Then I cut the slot in the lower cowl. This slot will later prove to be too short as the dimensions in the plan are given for a finished cowl, but I still have to cut some length of.



Then I made the cut at the back of the upper cowl. I needed quite some time to get it right as the first cut was much too shy of the line, so a lot of sandinf was needed.
I also drilled the pilot holes for the camlocks. On the picture there is a small gap between the cowl and the skin, this is only 1/16" and is for paint.



And here is apicture with the spinner, the gap with the cowl is on the mark.