Answer Hello Carl, your oven safety valve, regulator, and broil fitting should be adjustable. If you're converting from NAT to LP gas, your top orifices are available in kit# WB28K10556. If you are converting from LP gas back to NAT gas, there is no kit. You would need to order the NAT orifices from the parts list for your model. NAT - Med burner (2) - WB28K10022 NAT - SM burner (1) - WB28K10029 NAT - LG burner (1) - WB28K10030 Read More... Answered by AppliancePartsPros.com | Monday, October 22, 2012