Hi
An update to the webber carb problem I had. I seem to have solved it by replacing the float and needle valve and resetting the the float level to be correct, as per spec. In the end, I didn't end up rejetting the carb, and as my first run since rebuild has produced around 30mpg, I won't be doing anything else to the carb.
I bought the rebuild kit from this company. They were able to tell me the jet sizes used for the land rover, which is what is fitted to mine, and any other carb sold for the commer by the specialists. There isn't a specific application for the commer. However, I must say I am very happy with 30 mpg, and won't be looking to replace this carb anymore.
Andy
A wandering commer blog - http://commerblog.wordpress.com/