Sanded all fuselage spigots, Vertical Fin and aluminum stringers in vicinity of structural epoxy application with 180 grit, cleaned all sanded surfaces with acetone. Applied epoxy, completed installation, seized all installation positions with bungees. After epoxy drying for 2 hours, smoothed transition areas where fabric covering would telltale through. Riveted top stringer to vertical fin during epoxy application, used CP44 rivet.