Edelbrock setup for dual quad

Ok so have a few hundred miles on the dual quad now. For the most part, 95% problem free. Seems fairly reliable. Still running rich I believe. Heres pics of DS plugs. 1 and 3 are definitely lighter.
Carb setup is rear #1406 and is primary carb. Idle mixture screws 1 5/8 turns out on both sides.
1405 front carb. Idle mixture screws all in finger tight. Rods and jets in both carbs are stock. Blue springs in 1406 and orange in 1405.
Plugs are Champ RN14YC, and have maybe 1000 miles. Around 200 miles since cleaning and since dual quad.
Thanks
Steve

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