I just got the Toseven DM-02 installed with 46t chainring with 10mm offset. Chainline is pretty good. But this is geared way too low for my bike which has 20" wheels and came stock with a 53t single chainring. Motor will take any 110 BCD ring. It looks like there is a 50t 110BCD marketed for the Tongsheng with 10mm offset. That would be better.... but I really need a few more teeth. Even with an adapter, etc. Anyone have any luck? Thanks!