Taped L&R flap fairings into position. Match drilled upper row to the fuselage. Removed L&R flap fairings, shaped and trimmed. Reinstalled L&R flap fairings and match drilled lower portion holes. Removed L&R flap fairings and deburred all holes. Deburred all fuselage fairing holes. Rolled all edges on L&R fairings. Reinstalled L&R fairings and checked flap motion for interference. All good!!