A few of you did a dive trip. A few months down the line someone who was on the trip drops their cylinder in for a test only to find they need a shot blast. 2 months later the same happens to someone else so we all start checking.
5 people so far all have issues resulting in 4 sets getting shot blasted, one set getting written off after their second visual test at 7.5 years, and one with surface rust but no blast required. Plus some suit bottle issues caused by decanting from said cylinders.
Hyperthetically what would you do? Especially if the written off set and one of the shot blasted sets were yours?