Diplomat Hob spark problems, my hob sparks okay and I have cleaned everything possible on the burner but 50{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} of the time the gas will take some time before igniting and sometimes it will not ignite at all. I can see the spark but I am not sure if it is strong enough to ignite the gas, anybody heard of this sort of issues?