1999 Acura Integra loosing oil somehow. Very noticeable big clouds on high vacuum (high RPM off-throttle). 200psi compression-tested on 4 pistons and new valve seals. Exhaust valves feel dry when touched via the manifold. All 4 spark plugs are evenly dark brown. I'm clueless. Bad valve guides to reworn valve seals? Broken ringlands/worn oil rings? I noticed I do not have a breather box behind the block (open without plug - see in-line picture). How do I diagnose all this? Thank you

rings probably, oil control rings are under the compression rings so they can still have good compression but burn oil