"remember the builder was the one who did it wrong to start with. "
What, 30-40 years with zero owner maintenance, and you call that wrong? I know, they should have used bronze, but buyers WANTED lean shiny modern faultless stainless steel parts back then. You probably couldn't give away a boat with obsolete [sic] bronze hardware at that time.
In most US cities there are tool rental stores, and the big box hardware stores rent out commercial grade equipment for DIYers by the day or half. Almost anything, inlcuding drill bits for masonry and other large jobs. But oddly enough, no battery cable crimpers.
Maybe there's a business opportunity to be had, franchising out "Crimps-R-Us" shops?