How to remove burner/igniter

The bottom right burner that we use most is not igniting. The igniter is arcing at the base of the ceramic and not at the metal electrode on top. I want to remove the surface burner, but the two screw heads are rusted away.

How do I remove the burner/igniter? I have attached a small piece of wire to create a spark i that little valley area, but that is not working very well. It takes a long time to ignite. Attached is photo of burner.
DSC00697.jpg (73.1 KB)

Had to drill out the two rusted screws. Only got one out. Took three hours and various drill bits. Replaced it with a stainless screw. Have to get new sharper small bits to get the second one out. Solved the igniter arcing problem by insulating the ceramic igniter with a small piece of shrink tubing at the base.

After arcing problem cured, that small wire is no longer needed.