I'm leaving for Key Largo in a few days so I took the gear to the pool two weeks ago to make sure all was well. My Nemo Air is registering low battery so I took it to the shop to have it replaced. They had 4 techs try to get the cover off and it won't budge. They got it to the unlock point but it will not come off. It isn't completely stripped but it will be if it's messed with any more. They offered to send it back but I don't have time now - I have an Oceanic as a back up if it fails while I'm down there but I love my Nemo! Any advice for getting the cover off? Does Mares have replacements if it does get stripped? Thanks!