Riceburner78 wrote:I also have a mag stoker and with all my searchinh I found that if you plug the combustion air fan in direct to the wall that should keep the grates cool when your stove is ideling. when the air stops the grates have no way too cool themselves. My stove is only 2 years old but have had no problems yet. hope this helps.
Like riceburner said I would plug your combustion blower in all the time. If you are not over firing then the grates are warping, cause they are not supported evenly allowing them to distort. Or like I said it seems like you are getting air in at the begining of the burn plate where no air is supposed to be. The furnace cement was just an idea, I would glue them in at the front, don't know if it would work or what problems it might cause, but maybe worth a try
Best of luck, Eric