I love this forum and since i bought my stove in october ive read it atleast an hour everyday,Thanks to all the great guys here for all the knowledge. But that being said there has alway been one thing that drives me alittle wacko.I own a 25 PDVC and like alot of guys mess with the bottom three buttons to clean the burn up on lower settings. I would like to know if these adjustments make any difference on the heat range settings 3-9??? Ive read many times someone talking about they run there stove on heat range 4 with the bottom set at whatever but i was always told this makes no difference after the second heat setting.I would love to hear Mike Holten once and for all tell use what the deal is so we all know.Ty for everything RMW