Prepared main aileron skins, deburred, drilled out stiffener angles and dimpled assoicated holes. Deburred and dimpled skin stiffener angles. Scuffed and cleaned surfaces in preparation for priming. I also received my thicker Duckworks landing light lens today. After the holidays, I'll finish up the final outboard leading edge and then begin tank assembly. I will try and get the aileron pieces primed as weather permits. It's been getting colder.