Cobalt quick disconnect o-ring replacement

[diverrex]

Last time out diving my Cobalt hose was leaking at the quick disconnect. I think it's the #3 o-ring down inside the barrel of the quick connect fitting. I managed to get the old o-ring off but have no idea how to get the new one on since my fingers can't fit into the barrel. Does anyone know how to do this? I'm guessing this is a factory repair but I'm going diving tomorrow and would like to use my Cobalt

So I took it to my LDS and they showed me how what I thought was one piece is actually two pieces and once you unscrew them then you can get at the o-ring to change it. Problem solved. Diving tomorrow at the oil rigs.