On freeways my 735 will not drive straight. it will want to change lanes by its self. someone told me it was my ball joints others tell me strut prob. another guy on the board had almost the same issue only his was a 750 and he was told aligment.??? also these clattering noise from the front are herad when going over a bump.?? has anyone have an answer to this dilemma of mine? thanks in advance.