Having bit the bullet and replaced the defective Butterfly axle and "O" ring on the left side carburetor I found myself struggling to set the idle and balance the carbs.
After much to-ing and fro-ing, I seem to have set the idle mixture (3/4 turn) and set the idle to 1250 RPM (per the tacho).
However I was thinking of trying to balance the carbs with some kind of manometer, but cannot seem to find any vacuum ports on these Bings. I have read somewhere that all the post '80 Bings have ports, but I do not seem to see them.
Am I going blind? Do I need to buy some ports from the Bing Agency and retro fit them??
Any and all help appreciated. Many thanks in advance.
