Frustrating trip to NAPA yesterday

Regardless which auto parts store you go to, you could get someone pretty green. Unless you want to educate that green person and spend more time in the store, always go in with the brand and part number you want and a backup brand and part number for the part. Less time wasted. To waste even less time, call in advance to see if they have it in stock. The parts chain I frequent, if they don't have the part on the shelf, will order it to their store and call me when it comes in (usually a couple hours later).