Need Help. Webers running rich

[CompClassics]

Unfortunately I am at the other end of the state.
Webers are easier than they appear, just think of aesch 1/2 of int of the carburetors as a single barrel carburetor and connected by a common float bowl. Here are a couple of easy checks to give us an idea of your numbers.
Remove the screen that is located between the two velocity stacks, there you will see four brass flat head type fasteners. Remove two of the brass screw looking fasteners from one side, one will have a hole in the middle of the flat head screw the other will be smaller and have no hole. The one with no hole in the flat screw head is the idle jet holder, attached to it is the idle jet There will be numbers and letters stamped into both of these brass pieces. Next the flat blade head with the hole in the center, there is four pieces associated with this part, the holder Which does nothing but hold the assembly in position, the main jet which is the tapered part at the bottom, the air corrector which is located inside the part that was described first and lastly the emulsion tube the long part with all the holes in it. All of these parts will have stamped letters and numbers. Both the idle jet assembly and the emulsion tube assembly come apart by sliding them apart, try not to use pliers as this can damage stamped number areas or sealing surfaces. These two assemblies are easy to remove for tuning the carburetors.
The last part is the choke, the big round barrel part in the exploded diagram located below the auxiliary Venturi. You should be able to look down the top of the carburetor barrel and note the number that is cast or stamped into the top edge without having to disassemble the carburetor.

[1795]

Bill,

Here is a youtube video showing how to assemble a 48 IDA and it names the parts that we are talking about. At about 5:40 it sows the installation of the main jets and idle jets and their holders. You would be basically doing the same in reverse. It is quite easy, I have changed out all 8 while tuning in about 10 minutes. A flat blade screw driver is all you need. And for now, all you need is to remove one main jet and it's holder and one idle jet and it's holder.

Wish I were able to be there to help.

https://youtu.be/jp_3OjwmmK8

Good luck Bill, based on your skill set this should be no problem.

Jim