Hi Davey, missed you when I was down, saw Robert from up in your neck of the woods...

Anyway, you say you think it's missing also? Then I would first check the plugs again. Check for wet or oil soaked ones and change again if needed.

Then yes, with the motor running, you can spray some WD-40 around the carb base lightly, and see if it picks up... if so you may have a vaccum leak which could cause some of the problem.

I would maybe contact Edelbrock, they are usually good with customer service, and have a tech dept. to help.

Then I'd try swapping the carb with a new base gasket etc... and see how it works...

Good luck, hope you track it down!

Brett - 67 Drop Top 455!