So when I start the car and drive it, its fine. Its when I stop and try to start it again while its still hot that it wont idle. Now if I let it cool down and start it again it idles just fine!

Not to mention my gas mileage has gotten pretty bad, about 100 miles to a tank. Anyone got any ideas? I've checked all the vaccum lines and replaced all of the ones that had cracks in them, etc.
2001 Z28 67k miles, A4, TrickFlow Heads, Cam, Fast, Boltons, Forged 347
Any help is appreciated, this just started about a week ago. There also seems to be some moisture in the valve covers, but none in the oil! Im at my wits end with this car, and if I cant figure it out I might blow it up lol