Removed hitch bar to clean up rust and repaint. Despite WD40 and best intentions back bolt has broken its captured nut in frame. It now just spins will not tighten or loosen. Has about 1 inch of play and just dangling. All others were fine and when loosened came out cleanly and re-threaded correctly. Member is tightened down and has no wiggle save that one little of a bolt What are my options for this bolt? Saw posts warning this could happen yet no posts on ideas to remedy it. Would hate to cut and through bolt this.