The Haynes manual for our 92 Accord lists a value for igniter resistance, but doesn't say between which terminals it is measured. It also says to remove two set screws to remove the igniter. With the rotor removed, I only see one screw-not a set screw, BTW, and it looks to be at a bad angle to reach with a screwdriver. Are there actually two screws, and must something else be removed to access the hidden screw? Thanks, John