Hello Tommy,
Consider adding to your parameter file the following DESTID prior to the DEFNODE/NODE statements that defines your two printers in CA Spool:
DESTID QDEST=PRT1,FDEST=(PRT1,PRT2)
Simply change the PRT1 strings with the NODE name of the printer that initially receives the file and PRT2 the NODE name of the additional printer you want also to get a copy of the file.
This DESTID parameter requires the CA Spool /REINIT command to be entered in our Menu. You also need to send a new file to PRT1 so you can see how it will be sent to both PRT1 and PRT2.
Keep us posted if this helps Tommy
Regards, Cesar