DGS,
I'm the maker, it was stated in the original post. I've responded a couple times already.
What I think people are missing here is the real possiblity that the bladder in a wing can stick together. If that happens over either the OPV or the Fill hose fitting , or both you can have a problem. It wouldn't much matter what shape the wing is.
Although our wings have unique features, and unique profiles, we use pretty much the industry stand methods of contruction, same urethane, same fittings.
It's too bad Packetsniffer did not inspect the bladder right after, but I put my money on salt. It doesn't seem far fetched, that a bladder stuck together, could result in a narrow channel that would let air in under pressure, but would be insufficent to let air out.
It is significant to me that a rinsing seems to have restored the wing to normal function.
Regards,
Tobin