Completed work on the rough Horizontal Stab. Finished installing the wing ribs, securing them all in place. Installed a bracket and mount for my autopilot servo that will actuate a trim tab attached to the rear edge. Cut skins to size, fit in place, and started to drill holes for cleco and eventually rivets. Many holes to drill, many rivets to pull. Ran out of rivets and had to order more. Closed in skin, cut hole for autopilot bellcrank, fabricated trim tab, riveted hinge and bracket to tab, and attached to rear of fuselage. With my son's help, was able to trial fit to fuselage, clearance skins for mount bolts and sides of fuselage. Preliminary hard mount shows full range of motion w/o interference. Stab is level and appears to be solid. Need to finish fairings, mount for counterweight, after cover box and counterweight bracket for trim tab.