After driving the car for about an hour I pulled a plug to read it. It looked much better than the other plugs. After studying the plug link and making comparisons to the pictures I would say that the Holley is only slightly rich and I need to bring timing down to around 14 deg advance from 16 degrees, but really the plug is very close to looking like the picture of best. Now here is a question for the BG tech! If the BG Mighty Demon carb I have listed on eBay don't sell can I replace the metering blocks with a set that is leaner or is changing the jets all that can be done?