Mudguards have worn away where they contact the seat stay on carbon frame. A little deep, wondering if cosmetic or more serious. The one on the right stay doesn't look as deep but you can see 3 colours which worries me, black paint, then light silver, then dark grey. Thoughts? In need of repair or helicopter tape to protect is enough?
I tried to capture the images as accurately as possible but the lighting does cause some reflections that hide some detail.