I reaaaaally hate to admit this, I bought the bottle at Dick's (gasp!) had a gift card. You don't suppose Guyot are making crap to sell at the Wal-mart of outdoor stores, do you? This brings up another key issue-- I bought the bottle not only so I could ditch my Nalgene with steel cup, and that it would still fit various filters and purifiers designed to fit the standard wide mouth threads. Did they just make their product basically useless to me? Does anyone know anything about a change in manufacturing here? Also, not a defect,tried several others at the same chain again. Soooo it's either they're making two lines of product to sell or they've changed the product completely...