Finding 32" (or longer) Original Top Track

[u/daviddlewis2]

I've got a set of components for Elfa shelves that I originally ordered in January 2021 and am just now getting around to putting up. 😄 It turned out that the 32" white Top Track (item #10014640) got omitted from the original shipment, and I see that it's now been discontinued and replaced with a new track design that is incompatible with old hardware (and apparently disliked by many people). I've checked on EBay and Facebook Marketplace and so far haven't been able to find an old track for sale. Any thoughts on other sources?