I don't think Pelican even makes dive lights any more. You have a collection of vintage, discontinued products. If you're worried about breaking them use something replaceable. I don't go jogging with my Pharo-Tech.
I don't know Pelican specifically, but most flashlight companies in this position either tell you to GTFO or they'll give you a below-cost discount towards a current product. I asked Surefire what they could do about their "lifetime warranty" on a thousand dollars' worth of lights I own that they stopped making parts for, and got "lol i dunno."