Just because you did not get a letter from Heartland, do not assume you are not affected by their recalls or TSB's. I had a problem with a 2006 Grand Canyon with the Mor Ride suspension and was supposed to have gotten notified by Heartland. I did not receive any notification and it was only through this forum that I had mine looked at by my dealer and found the extra structural supports had not been installed. Again, do not assume that just because you did not get notified by Heartland you are OK. Look for yourself or take it back to your dealer to have them look at.