Just for info to you all:
I went to the Harbor freight site and did a search for the part numbers listed in the post above. Came up empty.
Did a second search for Nozzle Set and came up with part # 45386 which is a 1.8mm nozzle set but it is listed for a gun with the #30224. Wrong gun.
Did another search for Nozzle Set and came up with part # 45395 which is a 2.2mm nozzle set for the #43430 gun.
Went to another site. Came back to the Harbor Freight site to order the 2.2mm nozzle set. Typed in the part # 45395 and got a message that basically said there was no such part.
I guess I'll call the Customer Service for info.