Why not u bring the wing back to shop that sells u the item? It's better to have them check out ur problem.
But really, why is there a dump valve on top of a supposedly DIR complainant wing? An unnecessary point of failure that serves no real purpose?
i've got one of this too but never opened it before. sorry can't help much but i'd agree that going back to shop might be better. don't expect charge since such a minor thing and shop should take the opportunity to show their customer service
if u like, could switch to just a plain elbow type and shorten the corrugated hose length. the standard length i got seem a bit long and dangly [so that's why i moved to Agir wings for my twin setup]
in general, i feel that diverite tends to add what i think are features in their products so as to differentiate from others. some to me are quite good ideas. user has to think for themselves if it's a genuine benefit or just gimmick in general.
unlikely this is so-called "DIR compliant" due to the dump valve as an "extra point of failure". it's got more shortcomings than benefits it offers. although i should say it's better to think of simple gear setup, rather than branding bcds as compliant or non-compliant becaus ethere's a danger of gear focus rather than including the diver itself.