What you are referring to as repairs look like manufacturing cosmetics, as they’re present on the other part of the BC in the picture. Any bubbles coming from the stitching is likely to be trapped air. The BC’s air seal is the compression line running down beside the stitched seam as it’s a single bag bladder design.I bought a used BCD from facebook, of course the guy said there were not leaks...I tested it out and there are two small leaks coming from the top left shoulder by the inflater. It looks like the bladder is welded and they tried to fix it once by sewing it. I should be able to get inside if I can get the inflater off. Anyway I can turn this negative into a positive. Please dont respond to, "you should have checked it before or dont buy used stuff...
Thanks
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