Tastevin's cork question

[wondersofwine]

I just opened a screwcap (Stelvin) bottle of a New Zealand chardonnay last night and I like the screwcap. Experts aren't sure how well it serves wines for the holding (ones you want to cellar for ten or more years). I bought a recent vintage Argyle Pinot Noir (Oregon) and it also has a Stelvin cap. A distributor of Ports says that as much as 5% of wines can be ruined by cork taint and calls it stealing from the customer. Some wine retailers or wineries will replace a "corked" wine but what happens if you don't discover it until you open that beauty ten years after purchase?