I just bought a used X100s from B&H Photo and I was bummed to see a small, squiggly dark speck inside my viewfinder, near the bottom right corner. Otherwise the camera looks great. Only 600 shutter actuations. The camera is still under B&H's 30-day warranty and they are willing to take the camera back and repair it. Plus pay shipping both ways. My question is: Should I bother? Is it worth the risk of shipping the camera to fix a minor issue that doesn't effect operation? Or is this a sign of a problem with the camera? The main issue I can think of is that when I inevitably sell this camera, will this dirt speck bring down the value of the camera? Thanks in advance for your replies!