looking for injector nozzel help

[rlfervan]

Hi all. one of my quarantine doing some work on my CS-3.  having a little bit of hard starting issues. its likely just air in the fuel system but i did take the injector nozzle end apart for cleaning. Number on my injector is BDL 30S 206, I see plenty of nozzles with BDL 30S but the last 3 numbers different. dose anyone know what the last part of the number indicate?
Thanks in advance.