Other than the large LR slide, there is enough unused fabric to cut the used off and sew the cord back in...can’t just reverse as the diameter of the cord is different on your Septer. Usually it’s the thread that goes bad so have all 4 sides re-sewn while off. Some rollers can be pinned from the end and some have a hole in the roller that you put a nail in once you unroll it all the way before taking one end off so you can slide the fabric out of the roller. Local canvas shop charges me $120 to re-sew all 4 which I remove from on top by myself.