Keri

I have pretty much experienced the same niggle as you on the same boat several years ago (right wrist). I got mine after a 45min dive to 65+ on the Prince of Wales. Following that dive I reckon (based on a true scientific wild ass guess) that its related to the shape of the 50% and not having enough Helium in the bottom gas.

I don't like the square profiles in the 50% and would rather shorten 18 and 15 (there is no point in riding the deplenishing oxygen window particularly if you've spent longer at 21m) and then lengthen the 9 accordingly - works for me and I feel better after the dives.

For these longer bottom times and multi day trips I feel one really needs to step up the Helium or you start to have problems with Nitrogen. I would dive minium of 55% on Repulse now.


Sitting in FL waiting for EE to open

Graham