Well you are going about it the right way Rob (getting a manual).
Dinqua's site has lots of info on the carbs and is a good place to start. You probably have the D air mixture screws and they are in the same place as the old ones. Dinqua's pics show the locations. Get a small mirror so you can see the bottoms of the carbs...
Refer to the pic below for the following AI removal steps (btw,
www.newspeedmaster.com has a removal kit for $25):
(The AI removal is very easy and you do not have to remove the tank unless you want to remove the AI reed valve assembly)
The two parts labeled 10 hanging down in the pic are those tubes into the crankcase in front of the sparkplugs. Remove them and seal the holes with bolts and copper crush washers.
Remove the end of the rubber pipe (#11) from the airbox and plug the airbox hole.
Remove the hose (#8) that connects to the intake manifold (or is it on the carb?) and plug that port.
You have removed your AI. You can dress the hanging parts up out of the way or remove the tank and unbolt the AI reed assembly from the frame and throw the whole mess in a box. Frankly, I tossed mine in the trash.
The AI components:
