Bad PCV? Idle issue

Sounds like an overflow problem or high fuel level to me. (like a bad or contaminated needle or seat maybe) cause you said it feels richer and takes less warmup time.

Gotta watch a new PCV valve because I got one that was wide open and didn't close when it was supposed to, and it was sucking so much vacuum it was pulling oil mist out of the motor causing it to smoke like a pig at stoplights. (it was mis assembled or something) and another one fixed it.

Idling down with it plugged is normal just so you know.

You have an overfueling problem there somwhere.