I can only tell you what I did to mine. I just got her back together so I don't know if what I did works

If you go to shop talk and read "Removing the smog" you will see this link for CA bikes
CA De-Smog notes by Tim Skelton
It shows that you leave the two #6 hoses because they go to the Air Vent rails,
on the diaphram that they connect to you plug the small port with a vac cap and you buy a crankcase filter and push it onto the bigger port of the diaphram.
Purolator B13153 or Fram BA3812
also it shows that you have a 6 way T that you run vac hoses to all the carbs and then it says to PLUG this T, there is a pic of that.
I just did away with all the hoses and put Vac caps on all the Carb ports, I mean if I'm plugging the T why do I need all those hoses? Much cleaner..

On the #3 carb there is a second port on the bottom side that needs to be plugged also.
Hope this help,
Wewa