Dacor SGG365 one burner control won't cause spark

Question

Good morning Marine, You seem to have the answers so I was wondering if you could help me out please.I have a Dacor Preference SGM365 gs cooktop. One control
k**b will not cause it's respective burner (or any burner) to spark. If
I use another control k**b, it does spark and ignite.
So the problem appears to be with the control k**b and not the burner or the ignitor.thanks for any assistance you can lend! Jon