Tl* the contact owns a 2004 dodge durango, and a 2009 evenflo child restraint seat, model number ca37538cn. he has difficulty securing the child properly in the "convertible" child restraint seat. the harness straps fail to extend long enough to become locked into the buckle. the child restraint seat was installed using the vehicle safety belt system. the restraint seat was replaced. the vin was unavailable. the failure and current mileages were 68,300.