I have a dual burner that I had some soup spill over on the the leement got real hot (real red under glass until it cooled. Now the burner just comes on the the the "full" set of elements (no more dual). I miss the smaller burner and better control on heat on the burner. It is electric. Is it a hassel to change the burner element in these? I bougbht it in November of 2000.