Thanks for the advice kizwiki.
The carbs were professionally rebuilt by the PO (I have the receipts and pictures documenting it) as well as tuned. There is a lot of soot in the exhaust, I don’t know if that’s normal or not as this is the first car of this type I’ve owned.
The weather was very wet and cold, which would affect the mixture, definitely.
I’ll do a backtrack from the carbs, filters and back to the fuel pumps and see what I can find out.
6x6Thor