If you are going to order a "Supreme Bag Awning" then you should tell us or the people that you are ordering it from that you have a Coleman Camper. We will make a simple alteration to it so it will work correctly with your camper. Since the "Supreme Bag Awning" rafters have tensioning levers, and your roof mounting area is curved or sloped, the fabric projection is critical. What we do is add another rafter adjustment snap hole to each rafter so your fabric projection is corrected with the new location of the hole. If you have already purchased a Supreme Bag Awning and you did not get converted rafters, then we can send you directions how to do it easily. This does not apply to our "Classic Bag Awnings"