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I located a couple AN-6 adaptors to replace the hose barbs on the regulator. The adaptors are from Earl's (anplumbing.com), part #AT985006ERL for the black one and 995006ERL for the blue one. They are called AN "O" Ring Port Adaptors, AN-6 to #6 O-ring, 9/16-18 threads and will set you back $7.75 each.