Repair it?No way!If my Eleiko bar packs in after 20years, I would hang it on my wall like a trophy, possibly in a glass case - a true accomplishment, source of inspiration, and then buy a new one.
Well, why not just go ahead and buy one for your wall then?
But, if it has sentimental value, which it does, after 20 years of use, wouldn't it have more sentimental value after 30 or 40 years? I believe Eleiko even has gold plated versions you could buy for your wall.