Has anyone changed their buttons and springs to increase the depth rating for their housings? My Subal ND30 if rated to 180'. I would like to be able to take it deeper. I was thinking of having Backsckatter change the springs and butttons so it is rated to 400'. I was wondering if anyone has done this. How stiff are the buttons at shallow depths? Any regrets?
400' modification to Subal housing
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