Shown is the evolution of the shifter rear-support bushing. The factory unit (far left), a formed piece of thin metal with a loose-fitting rubber bushing zip-tied to the inside of it, appears inadequate. Barton offers two versions. The base version is a solid block with a polyurethane bushing that slips over the shaft behind the shifter housing. The latest version bolts solidly to the housing shaft; it utilizes corrosion-proof hardware and 304-stainless dowels, which slide precisely in polyurethane bushings.