AppliancePartsPros.com had the least expensive replacement parts, but I had to search YouTube to find out how to take apart my Maytag Atlantis MDG6400AWW built in 2003. This video also has a bit of humor and some diagnostic hints. I replaced both the flame sensor and the 2 solenoids rather than risk taking it apart twice. Once I found the video, it was a quick fix. Unfortunately, this video is for a MDG5500 Maytag Atlantis, but other than the dials on the top, the 5500 seems to be the same as the 6400. https://www.youtube.com/watch?v=UzLUYVUDJ4Y