I have a problem with my Enviro M55C - FPI pellet stove insert. I can’t get to the daughter board to replace it because the hopper surround is riveted. Did anyone ever figure out how to remove the rivets without damaging anything so you can replace the daughter board? Or is there any other way to get into the daughterboard to replace it from the side front or back? My off button is shot and so I need to replace this part but can’t figure out how to get to it.