Hi Ashley,
I have just looked through the reams of paperwork that i have regarding my 2 VW Campers, as i had one set of my carbs rebuilt to a brand new condition by a guy in the midlands, but sadly could not find his info.
This was some years ago and i think he may have retired since (he used to go to most of the VW shows), but i will keep looking and if i find the info i will let you know.
Regards Mike.