Ks ethirty integra dropper post sag

Looking some advise on a dropper post that has sag in it from new also a bit of sideways movement! The offending post is a ks e30-i. I was hoping I could just add some air as I can with my ks lev post, but I can't find a valve. Am I missing something or is it even possible to add air?
All advise welcome!
All advise welcome!
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