I know it is one of those double edge swords for a dive shop $$, but i would like to see padi, tdi or whoever get a certified repair and maint course that is industry supported by the manufactures to do maint and repair of our regulators even if it only can be used to repair only your own personal gear. I do have faith in my dive shop, but i trust me so much more, and i like to count on me for my life. because attention to detail in diving is everything.