Cannondale Scalpel SE1 chain sticks to chainring

Is there a mark on the chainring showing a chain link? Some rings have it to show which way to install the chain. Move the chain one tooth forward. The narrow wide teeth may be one tooth off.

https://preview.redd.it/gazvo1d44u7d1.jpeg?width=320&format=pjpg&auto=webp&s=f2303710bc02cc64e0b5440070984a1e91ab9d0b

Cannondale dealer here. Seen this a little bit, thats clearly a cannondale X-sync chainring not a HG+ chain ring. I do not know why cannondale specs the X-sync chainring on shimano bikes.

Shimano HG+ chains have the inner plate extend past the pin and roller, giving the “wide” link a narrower inner width then a sram or kmc chain. This makes the sticky to outright incompatible with non shimano HG+ chain rings. Probably not much the dealer can do for you but worth asking. In this case I would try to get my customer the correct chainring, at the very least if Cannondale was no help get it to them at shop cost.

What you have [https://www.cannondale.com/en/gear/components/cranks-and-chainrings/chainrings/hollowgram-spidering-sl-10-arm-x-sync](https://www.cannondale.com/en/gear/components/cranks-and-chainrings/chainrings/hollowgram-spidering-sl-10-arm-x-sync)

What’s recomanded for shimano 12speed HG+ [https://www.cannondale.com/en/gear/components/cranks-and-chainrings/chainrings/hollowgram-spidering-sl-chainring](https://www.cannondale.com/en/gear/components/cranks-and-chainrings/chainrings/hollowgram-spidering-sl-chainring)

Hope this helps, wrong parts on a oem bike are a pain, as when you ask for warranty replacement you just get sent the same thing or something completely different and also incompatible. It’s not just Cannondale. seen it with many brands.