This is extremely frustrating: these Boa closures are fine on a road shoe but they are not an appropriate closure for an MTB/ gravel shoe. I am about to buy a second one for a pair of shoes that is barely a year old. If you Boa closures are used in shoes that will be used on dirt, they should be serviceable so a user can clean the dirt that makes them get stuck instead of wasting resources and money on replacement parts. Specialized, this a failed design for an MTB shoe.