I tried doing one about 5 years ago. Was a nightmare. Got everything loose, and the dam thing just would not come out. The one in there had several holes in it. Wasted almost 3 hours on it. Put it back together, and ended up not charging anything. Couldn't fix it. I learned a valuable lesson - not worth replacing. I would tell them to call factory service or get new oven. Just not worth doing some jobs.