Bought this off a member here awhile back. I brought it to a dive shop to fill they said o ring bad. AoA sent me one for free(awesome cs) the shop replaced and filled, no major air leak. Well I get it home n try to use it a week or two later n it’s empty. It obviously has a slow leak somewhere(full disclosure) I live 2.5 hour drive to the nearest dive shop. I’ve already have 10 hours of driving and 2 days into this. I don’t have that kind of time to sort this out $550 shipped. I’ve bought lots of items here and have excellent feedback. Pm for my cell number and for more pictures. FaceTime. I can get this in the mail today usps. If ya want ups or fed ex I can do that and I’d make a trip to town for that. 1.5 hour drive one way.