Been there, done that. Do as others wiser than me have or will suggest. If the leak is at the top of the IP, and you are going to do the delivery valves, get and replace all of the plastic fuel lines, they leak too. If they are not yet hardened, you can replace just the o-rings on the fuel line nipples. Also get some of the small braided fuel line and replace all of the sections between injectors. While at it, replace the hardened and cracked vapor lines from the hockey puck to the intake. Clean the intake and crossover, yada, yada, yada,,, Like another poster said, once you do all that, it will run like crap. Drink heavily. Wait 24 hours (for the alcohol to wear off), then let her run for couple of hours. We'll walk you through it.