We have an electric range, about 10 years old. Where one of the burner elements plugs in to the "socket" (under the stove top) there is a very fine white powder that collects under ONE of the element prongs. If we wipe it off, it forms again. It doesn't collect under the other prong of that element, and it doesn't form under the other burners (elements). The element looks fine, and the socket looks fine. Does anyone have any idea if one of these things needs to be replaced? The burner seems to work okay.

Thanks for any info.