During the last maintenance of my C30 year 07 (80 Tkm) it was noticed that the two screws with which the soot particle filter was attached to the engine were broken off. As a possible cause the friendly person called a “bad” or possibly even a loose screw and subsequent break of the then overburdened single screw. However, one can exclude a damage due to sportive driving or the like. Not quite satisfied with this answer I turned to the Volvo customer service, which has not yet penetrated to a correct opinion, let itself specified feedback deadlines pass and not report further. On the phone one speaks there now of a wear part and consoled on a soon coming, but probably (for me) not too positive opinion. What do you think of the history?