That's what I'm asking...how do you know there is "too much" oil on that side?
It's frustrating trying to understand what your looking at that makes you think it's an excess oil issue to one side only?
Want to test that? It's easy. Put the PCV valve in the other cover and out the breather on the side it's not on now and see what happens?
I say it will be the same thing, different side.
But I could be wrong too.