converting maytag stove to nat gas
 

i need to change the orfices in the ovens: top oven is oven and broil and the lower is just a oven. for converting it to lp gas the top took .038 in each and the lower oven took .047 orfice..... so my question is that i have a 90.0570 and a 90.0723 and one that is stamped1.44 which one goes where thank you for any help you can give