[jd0n88]

I am helping a chevy friend with a poor running car and believe it is carb related. 2 years ago he took off the quadrajet (and threw it away) and replaced it with a new Edelbrock 1806 650 cfm carb. He said it ran good until recently, after checking the basics I offered to take it apart and clean it. It is full of dirt from bad gas/ethanol/no fuel stabilizer, etc and sits for a long time. While cleaning it I noticed one of the primary jets looks unfinished from the bottom side and the jet size is restricted to about half of what it should be! I don't see how it ran correctly right out of the box. Look at the picture, what do you think? The carb has never been apart until now.