[Handysam]

I have not experienced that, but I could see where that would be a huge annoyance. I would guess you would have to get something in there to cut off those little pieces, like a very loooong pair of scissors. Without creating a huge can of worms by opening up the underside of the roof, pulling the duct down and taking it apart,WHEW!! I will have to think about that one, its making my head hurt. Sam