Trimmed and sanded upper and lower cowls - then drilled and clecoed them together. Marked and cut out the clearance hole for the prop flange. Followed the advice of Peter T. Made the hole a tight fit on the prop flange so the cowl can rest on the flange while all the trimming is done. Once all the trimming is done - the hole can be enlarged to safely clear the flange.
Many fits, trims & refits but didn't get it finished. Looks like it will take some time to get the cowls into reasonable position in relation to the flange and spinner - and with a reasonable fit to the fuselage.
Sheryl helping with the joining of the top and bottom cowls.