I have the truck all back together, but I have a vacuum leak now from the oval-shaped area where the fuel lines and wiring harness for the CSFI pass through the upper intake manifold. Any idea what I might have done wrong? I had a hard time telling where it was coming from, but I listened through a hose and pin-pointed it. I don't recall if there was some type of seal or something there. I don't want to remove the upper intake again unless I have to. Please help!
Edit: Disregard...I fixed it. The O-ring that is supposed to seal it had slipped down. I replaced it and everything's fine now.