Bolw By ???
If you rarely drive it, and it's parked outside, I wouldnt worry much about some goop under the breather. It's typical condensation stuff. the engine has to get hot enough regularly to evaporate the condesate out of the crank case. It happens a lot in the northeast. If the dipstick and waste oil drained look good (meaning not cloudy or light colored) then I would tear into it. Clean the stuff off, and drive the car a bit. Also, dont get int he habit of "warming it up" once in a while. Leave it shut off, or run it and warm it up well every time.
340, the PCV functions as long as the engine is turning on it's own. If it didnt, we'd have oil vapor all over every time the throttle was mashed and the rpms came up. It only seals off if the engine backfires out the carb. Otherwise, it's open.