Or go a complete new way of tuning with Keith Frank
at https://vintagetechnologygarage.groups.io/g/sidedraft/topic/100219752#4322
He has a big knowledge of the DCOE carbs and helps to the end of tuning.
I went his route and find them way better and easier to tune compared to the original weber.
He has his new kind of jets at this store.
https://www.webstore.com/user,pgr,82598,ac,82598,owner_id,other_items