WE HAD THAT PROBlEM ABOUT 7 YEARS AGO THE COMBINE WAS ABOUT 4YEARS OUT OF WARRENTY BUT IH FIXED IT AND IT DIDN'T COST US ANYTHING. THE DEAlERSHIP HAD SEEN IT 2 OTHER TIMES.
Double l, that problem has occurred before on the 466s used in 1660s and 80s. I have heard of installing magnets on the pan like you suggested, but have no idea if its a 100% sure thing.