Greetings all, I was reading the Factory pro site and viewing the pictures of worn needle jets and their pics show their jet as oblong and stick as round. I assume this is a mistake. But a question remains in my mind about whether or not I need new jets. I looked at a dozen needle jets in my stock and all look concentric.The seat is so small its hard to be sure and since its recessed my measuring tools wont decide if they are oblong or not either. Has anyone replaced these jets and actually experienced a benefit? At almost 150.00 with shipping I won't be ordering them just for fun. I have a set of old, crusty jets and after cleaning the crud off of them, I didn't notice wear. I used magnifier lenses and bright light too. I understand how the engines vacuum draw may wear the brass jet on the engine side if you have other than aluminum needles causing a rich condition that may not be correctable. feedback on this subject will be appreciated.