Since the plugs and the exhaust indicate a rich condition I decided to change the jets. The primary jets were 68. I changed them to 66. The accelerator pump discharge nozzle is 31.
I damaged the metering block gasket during the jet change and had to buy a gasket set. Now everything is ready to go. I reset the idle mixture screws to default. I need to warm up the engine and use the vacuum gauge to set the idle mixture screws.
