I hope I searched enough and there aren't 100 threads on this. I switched my chain over to HD BMX chain. It fit perfectly on rear and tensioner sprockets, but front sprocket is fatter. For the time being I spent a little personal time with the angle grinder and the Dremel and took a stock one down to fit. But we all know how long that'll probably last. Where can I get a front sprocket for my China girl that fits a 410 chain?