The chain shouldn’t be riding up the teeth this much with 15 lbs (6.8kg) on the pedal, right? by besselfunctions Bicycling Bike Bike Repair Biking Cycling Repair
besselfunctions on October 8, 2024 7:55 pm [These Sugino chainrings came with an odd (to me) tooth profile, as they are fairly flat between the teeth](https://cdn11.bigcommerce.com/s-1rmgckn/images/stencil/2280×2280/products/11073/132605/vintage_bike_parts_components_mtb_road_16751__91767.1651539423.jpg?c=2)
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[These Sugino chainrings came with an odd (to me) tooth profile, as they are fairly flat between the teeth](https://cdn11.bigcommerce.com/s-1rmgckn/images/stencil/2280×2280/products/11073/132605/vintage_bike_parts_components_mtb_road_16751__91767.1651539423.jpg?c=2)
Have you checked chain stretch?
Worn chainring