Product review (1 stars): I have used KA cleaner they recommend, vinegar
My brand new Kitchen aid KFGS366VSS-S cooktop has rust stains that won't come off.  I have used KA cleaner they recommend, vinegar, lemon juice, bon ami, all what they said would work.  I am under warranty but they say its not.  Bought in 12/2013, produced receipt still no help.  I will call one last time if i don't get the help no more kitchenaid