My Wallas two burner stove/furnace, 85DU/270, won't start. have cheecked both 15 and 2 amp fuses. Plenty of battery. I have toggled the switch back and forth and sprayed switch contacts with cleaner. I truely suspect switch itself but neglected to take volt meter last trip to Seward. What is opinion of Wallas users, has anyone had switch problems and how do I jump the switch to see if it will start? I am no electronics man. Good at changing light bulbs and checking fuses!