The flex drive is often a broken saw in disguise waiting for an inopportune time to expose itself. If it were mine, I'd sell it for ~ $100, buy a similar belt drive Cman or Ridgid saw, and replace the fence on that one if necessary….roughly the same cost to you, but has better upside potential. You can always add the cast iron wings from your current saw to a replacement saw if you like.
Just my 2 cents….
Just my 2 cents….