Have a couple of questions on my new to me Dell 36 DRLAs. First, in the picture, the red square, is that a vaccuum hose nipple? If it is should I block it off since my dizzy is the 009 and it doesn't have the vaccuum advance. 2nd question, do I adjust the screw in the yellow or green circle to increase idle speed.

Forgot the picture:

Cap all of the vacuum ports off. The yellow circle is the idle adjustment.

The green circle looks to be where you'd adjust carb-to-carb balance in a setup that has another carb sitting next to this one, say in an inline four.