if you are seeing smoke from the valve covers, it's time for a rebuild. besides, the pcv valve is sucking all the fumes the other way, so unless you have excess blowby, you wouldn't see anything out of that hole anyways. with the breather out, pull the pcv valve out of the other valve cover with the engine idling and see if anything comes out the hole with the breather then.
you don't plan sincerity.
you have to make it up on the spot.
wanna hear about 20 years ago when i was too smart to know any better?