Richard, the main jets are 130 as shown in this link and also what I have seen in a few carbs. 190 is the air bleed (correction) jet for the main circuit.
http://www.ferret-fv701.co.uk/mnuls/...40nnipcarb.pdf
Steve, FYI, I have worked on two Ferret 40NNIP carbs that also had RE16434 stamped on them.
Malcolm