Just purchased a 60D and 15-85 USM today and I have a quick question. When I took the lens out of the box and had look at it I noticed there was a tiny speck of dust inside the front glass sitting on the second set of glass off to one side slightly. This is really annoying but I'm not sure if it is something I should really be worrying about. I bought them online so I'm wondering if it is worth sending the lens back overseas or just ignoring it. What do you all think? Any info would be a great help.