I realised I had not drilled a hole for the beacon wire on the upper rudder leading edge. The factory use the second rivet down from the top for the beacon wire grommet hole. I did the same, however in addition I installed two extra rivets around the grommet. I had a short section of four core wire which I threaded through the grommets to test fit and it's all OK. Finished "Scotchbriting " the vertical stab. so ready for delivery to the paint shop.