Just did the exact repair myself. You will need a 1/8 pipe tap, a "q" size bit, a 1/8 nipple, 1/8 tee, two 1/8 x 1/4 barb fittings, grease, thread sealer and brake cleaner or carb cleaner. Dip your drill bit in grease to catch the metal chips then carefully drill the brass nub out. Dip your tap...