A possible fix?
My 2009 Landmark started to do the same,but I heard that the one's putting our rigs together seem to get into a bit of a hurry so they can move on to the next one to improve their income, therefore screwing in the fenders against the body to the point of pulling the fender beyond its capacity and when the rig goes down the road the vibration causes the tear or break, the fix at least for me! I went to a local hardware store in my case home depot, a went to the fastening department and purchased enough rubber washers for both fenders and removed the screws from the fender skirts and placed one rubber washer between the skirts and the body and "hand tightened" each screw down tight enough to keep the fender snug to the rubber washer to prevent the skirt from being stretched beyond its limit. Once again this method has worked for me so far, not saying that this is the cure but I am keeping my fingers crossed, good luck and if someone out their in heartland world has an answere let me know if there is a cure,
Thanks.