I've thought about that cleaning procedure, I have it saved on my home computer actually and It's what I'm going to do on my VR6 head that I am rebuilding. But the CQ is my daily so I could probably do it in a weekend but I'd rather not risk it.
Actually maybe I will go ahead and do the 12v ones first and see how it goes, if I am confident that I can do 20 of them in a weekend maybe I will.
I guess it's the only real way to find out if it makes a difference in how it runs. Taking off the fuel rail and intake manifold is a pain though.
Edit: forgot to mention, I'm running Mobil-1 15w-50.