I called AppliancePartsPros.com to see if they carried the parts that I needed. They knew what parts I needed and they were in stock. When the valves arrived I took the stove apart and replaced the valves. The valves were easy to replace with a minimum amount of tools: A screwdriver, adjustable end wrench, and a 1/4" drive socket set. I have all the tools necessary to do this job, but if I didn't and had to buy them, it would still be less expensive than hiring a repair person to do this job for me.