I looked all around my city to find a store but had no luck. So I measured and ordered a medium Bell Sport SA2010 helmet online from Saferacer. I got the helmet today and tried it on. I need help to know if you think I should exchange it for the Small. The helmet slides over my ears kind of easily. Once my head is in, it fits good at the top and around the sides of my skull, but the cheekbone area is loose. It can wiggle easily from side to side, and allows the helmet to move up and down a bit too. I assume I should return it for the Small, but I was concerned since it fits well everywhere else. What do you guys think?