Hi all, TR3-4-4c etc The sliding plastic freq plate, w/ little red knob. A wave washer goes over the red knob. I am assuming the washer goes between the clear plastic and the aluminum front cover ? With the bow on the washer in or out? I have tried in and the twin edges hang on the opening in the (alum) front faceplate, and literally won't let it move. I never had the washer and now I do ...but.........Carl
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