0405 Seated 4 Z
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When welding the short slider tubes to the side rails, don't weld wherethe welder is pointed in this picture. This will cause the tube to warpas shown. Tack weld a spot 90 degrees around the tube where the notched saddle does not contact the slider tube.Now if there is any warp, it will be parallel to the crossbars, and theywill still slide easily. View Related Article
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