Webb Carb Vacuum hose

I understand one of the vacuum pipes should go from the air box to back of the Webb Carb. (Warm air). But I noticed there is a pipe going from one side of the carb to another (Please see attached picture)

Should I re route this or leave it as it is?




Also does anyone know the part number for the vacuum hose?

From what I read on the forum, I maybe wrong I could connect s t piece to the left arrow and 1 hose would go into the original airbox? What size t piece would be required.

There was a green unit on the left, which I removed as it doesn't do anything?

 Thanks

The top vac port on the back of the weber goes to the back port on the thermostat mounted on the side of the air box. Front port on air box goes to the warm air flap on the start of the air box intake.
The lower port on the back of the weber goes to the vac choke adjuster on the side of the weber.
Ramair (ebay) do some nice silicone pipe if you need to replace it.. think i used 3mm id pipe.

Here is a vac pipe diagram i found