Rusted sealed burner

The burner rusted after years of spaghetti pots boiling over. When I went to twist the the burner to remove it the top portion broke off. This left the bottom side of the burner stuck into the cook-top. I put some 3-in-1 oil on the rusted rim for a day or two. I had to drill the phillips head screw and twist it with a vise grip. I used a pair of pliers to grab the center of the broken-off burner part. After a few tries it broke loose and was out. The rest was easy. I recommend sealing the rim between the burner and the cook-top. I used silicone sealant. This should keep the water from leaking underneath the burner and into the cook-top.