There is little to no adjustment on the metering rods on a '69BBD. Maybe none. I can check later when I am out in the shop, I have a couple torn apart.

You didn't check your float height from what I read. Start there.

If the inlet turns while attaching the fuel line it will alter the float height, it doesn't take much.

They are great little carbs. Very-very simple!

"The only thing to do for triumph of evil is for good men to do nothing"

"NUNQUAM NON PARATUS!"