On this parts fiche the Cushion,frame Cover is the most specified component.
Of all the components that make up this Frame Cover (gs1000m the Washer (6.5x18x1.6) has the lowest price.
The Gs1000n 1978 (c) Usa (e03) Frame Cover (gs1000m consists of twenty-two pieces with the Cover,frame,right being the most expensive.