Thanks essen for the info, my stone is a metalcraft that I purchase from a chefs warehouse local. (dont know if it is good or not. i may get some tiles at the h depot or something just scared of the chemicals.
I may try to put the stone right over the element there is a grate over the element about an inch away, right now I have the stone 1st slide in rack position about 4 inches away. i wonder if that is the problem. (also need a infered guage)