Just took the Grom on a quick trip to the store and thought the chain or something sounded kind of loud particularly when coasting down a hill in gear. When I got back I took it for a quick spin down the street sans helmet, and it seems like the chain makes a lot of noise? I’m not sure as I never ride without a helmet. It’s been a half dozen or so rides since I’ve lubed the chain, and I got caught in the rain yesterday. Still it seemed loud. Am I nuts or what?