Thanx Clancy;
You make me blush.
They can be rebushed without too much trouble. The problem comes if they are worn out to one spot on their circumferance. If this has happened I have to agree with Allen, their strength has been compromised. In that case the lesser of two evils is to make a new rod. Randy is correct 660 Bronze is the stuff to use.
A good drill press and a dedicated jig and anyone can bush a rod, it is not rocket science. A lathe is better and a mill better yet.
My preferance would be a new rod, don't mess with the old ones.
"Billy G"