Originally Posted by TPham
My concern is this. the default block thread is somewhat countersink. So if I put other fitting in, I don't think the o-ring fit in correctly because I can only screw the fitting in half wayWarning: Spoiler! (Click to show)
That is a concern. Have you tried the fittings you want, filled with water, and have a way to see if the fitting holds pressure? Blowing into the other side for instance? Trying to create pressure with fluid inside the block? I had the same concern with an X3 Ek Res, ended up having to use XSPC compression fittings because they screw in deeper and hold the seal.