confused

i recently converted a range from nat. gas to lp. purchased new orifaces for the cooktop burners. turned the screw(oriface) around inthe safety valve as in the manual. do not have manual now…previous owner took when they moved. QUESTION…is there an oriface that needs changed in the safety valve, where the oven burner meets the safety valve.i have a picture of the safety valve on my screen and it sure looks like i need to change it. however there is no part number shown. gosh i need advise.