@bfeng you have neatly summarised the situation I'm facing.
I have been given the contacts of a lady in Germany that JPA uses to rebuild these carbs and has sufficient know-how/experience/equipment to test them and guarantee they will work correctly once on the car: Annette Hué of IOZ in Muelheim-Kaerlich. Has anyone heard of her previously?
I'm thinking this is my best bet, unless she charges similar to the Weber kit to right the issue of course.
i am so sad to see this that i will make an offer to you based on the fact that
- your zeniths had been recently serviced (my biggest concern is to clean them which i do not want to do anymore)
- i have done my own zeniths by myself last week so all the knowledge is now fresh
look at your pms