It took 10W in to charbroil contact 11, for position L, on the inductor wafer switch (SW5) for this Versa Tuner 2. Will scaping away the carbon and burnishing the contacts restore switch function? or must I replace it? Do you know of a generic subsitute for this 11-pole/single throw wafer? Thanks & 73, Alan, ex-N5KNR, now W5EAC