sup guys, new to the site but ive had my a4 for a few months now and since about a month ago the lower door moulding on the driver door rusted out on the side that touches the door and has since fell off, then two days ago i noticed that the passenger side lower moulding was rusted on the same side as well and fell off the same day, im sure the back two will fall off soon and i was wondering is this a common problem with them? and if so how do i go about replacing or salvaging what is left of them..thanks for the help guys i appreciate it and i look forward to posting and commenting many forums to come.

-kaine