PCV issue

as long as the hose going to the valve is tight it should be fine. the metering rods and main jets have no affect on the idle unless you have the idle speed screw way out or should i say way in to maintain a idle. this happens when you timing at idle is very low or even a lean idle mixture. if your idle is adjusted to max vacuum and you open the mixture screws more does the engine slow down and drop vacuum or does it get to a point and just stay the same. if it stays the same then your idle circuity is just to lean. the typical amout of idle screw position is between 1.5 turn to 2.5 if its out more then that then your running into a problem. if its less then that then your off idle transfers slot may be too rich. timing and vacuum leaks are the two main reasons for a lean idle but a engine with a farely large rumpety cam will also do this.big cam carb are made to fix this on purpose with there metering intended to deal with the low vacuum that large cams give.the idle fuel orifice can be adjusted carefully on a edelbrock carb with a small drill. if your take out your booster nozzles there are two tubes, its the skinny tube with a small hole in it. the small hole is your fuel orifice. if this is your situation be very careful if you use this to fix it.