I was not aware there was a problem but found it out. I'm not sure I understand about the size of the chainring? Narrow, wide? Please clarify? It was not fun at 0400 and quite dark. It was cold but I dress accordingly in the winter. It was just a frustration. All gone! The bike is fun. It was cool to have a buddy ride in on his Yamaha roadbike and park by me. He noticed right away it was electric. I allowed as I would trade him straight up for his Yamaha, and let him ride the electric home tonight at 2300. He declined but said he would like to have both his road bike and a Verve style bike. I never know if he is kidding me or serious. But we worked together about four years hauling Inmates around the state of Misery. So we have a bit of fun with each other whenever we can get to joking. Maybe he's serious and I sold another bike for Biscari Brothers Bikes. Please tell me more about the chainring/chain problem Korax. Be Well, Bluesfrog.