I purchased some VN rocker covers and it has a nozzle missing on the drivers side cover as pictured.

What was ment to go there?
Is the one that is on the passengers side a PCV or is it just an outlet?
I was going to run one to a catch can and another a PCV to the carby.
I tried putting my old PCV valve in the hole with the missing nozzle and it does not fit well. The open hole has a key way in it so i cant see how it would make a good seal on the PCV.
Any help would be appreciated.
Regards
Evan.