Met my weekly goal again. Only worked three days due to travel for the Thanksgiving holidays. Completed COM antenna doubler by drilling and match drilling it to the rib and the original doubler. Trimmed the pop-rivet wedge I made earlier this week. Deburred holes. Countersunk the contactors doubler/firewall with help from Ellicia. I realized too late that I should have dimpled many of the holes and countersunk the doubler. Using the small-head NAS rivets for the nutplates. Countersunk the fuel bulkhead fitting doubler. Deburred firewall holes for the contactor and fuel doublers. Deburred firewall holes for the cabin heat valve. Searched for a tool to help torque the nuts that are on the center section near the bottom fuselage skin and difficult to reach. Found some interesting tools, but decided to check out harbor freight long reach combination wrenches and make my own if needed.