Yes, when it started leaking and I removed adapter, I realized those Scott holes already damaged o-ring a bit
I rotated adapter and it sealed again, but I guess it's just matter of time it will leak again.
Thanks Porkey, I like that brass nipple idea, please let us know if it works or not.
Tscktran, if you'll read description - it says anodized aluminum, and it also has o-ring.
Not sure if it's good for such a high pressure