Routing crack case breather
 

Hi,
In my Fse 450 2005, one of the former owners modified the routing of the crankcase breather.
It now runs from the original crankcase via a T junction, which combine it with a breather tubefrom th camshaft cover to the airfilter box. Standard this will go directly from crankcase to airbox, i think
Now i have the issue that there is coming quite some engine oil from the camshaft cover breather.
Where does this breather tube normally route to?
I teplaced the piston with rings already, and also the camseals.