In my first few months of ownership of my 2017 Sduro FullNine 6.5, I have managed to break a couple of teeth on the front crankset, especially the large chainring. I am going to take the bike back to my dealer to get a full tune up, brake bleed, and have the chainrings replaced, but I'm hesitant to replace with the factory rings - they seem a bit cheap. On that note, looking at the rear cogs I see teeth with different profiles, but I'm not sure if that's a result of wear or an engineered design. My main concern is those forward chainrings: They just don't inspire any confidence that they'll continue to hold the torque applied by my 243 lb (110 kilo) body, especially when standing. Any advice on upgrades to the drivetrain?