Hey Tim,
I installed the PCV at its default settings per the manual, ran it for awhile then calibrated it with a vacuum gauge. Cruise circuit went from 10 turns out to 3 turns out or so but I noticed no difference in how the car ran or idled. It was easy to adjust but a bit fiddly since you have to hold it in place in the valve cover with one hand as you adjust with the other (while watching the gauge) on a hot engine.
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