i bought some more last night, ill try to set up a camera to show how i straighten it.
basically, i take the long piece, look for the straightest section with the least amount of nodes. then ill check the sections that need straightening.
i spin that section so that the bend comes to me then away, like forward and back, then i straighten from right to left, using a cloth. ive found that its usually just bent right by the nodes, so you can do that first. then i straighten the nodes. thats basically it. ill still try to make a video of it.