Ricardo D Naples , FL April 07, 2017 Changing the cook top oven from natural gas to propane gas. I remove the old orifices and replaced them with the ones I bought form appliancepartspros.com . Ii also needed a new hose to attach to the propane bottle. Read More... Do-It-Yourself Rating: Repair Time Estimate: 15-30 minutes Tools: Nut Drivers, Socket Set