regarding the rear spring top locator (perch?) - the metal tube that the rubber bump stop fits into... here picture (from youtube) to confirm which bit i'm talking about.

on my camper the metal tube has come away and the rubber bump stop is missing. My question is... How is the metal tube attached? Looks like it needs to be spot welded back in place? Should this be a big job (ie, expensive) for my garage to do?

any advice very welcome! thanks, Kev