Hard to start, found problem. Now Why?

Did you ever find the magic PCV?
I put on a new one that was specific to that year engine. I also had a restricted orfice in the hose, but it would not start when cold. I capped carb port and it started. Took car out for cruise today and it ran like a top. First time out in 8 years. So I guess that I can live with it. Thanks for checking.