We had a problem airing up after being parked . It was taking way too long after we had motion control units added to the air lines. It was inspected at the Tucson Freightliner Shop and they said that they could not find a leak, but it drove great after the air was at a drivable level and maybe the MCU's made it air more slowly. Just the front dropped like yours did. Then we took the coach to the Winnie dealer in Tucson. The service advisor was sitting at his desk in the office. He looked out the window and said, "I can see that you have a leak in the front air lines." He made this observation without getting up. A check of the coach revealed that one of the MCU's in front was improperly installed and caused an air leak. It was replaced along with a section of the air line and all was well. How Freightliner could miss this I don't know. I would have the air lines checked. The leak might not be loud enough to hear, just like ours. Happy Travels , Joe
2008 Itasca Latitude 39W. Cummins ISB 6.7 Turbo 340HP. Allison 6 Speed. Freightliner XCS. Michelin XRV 255/80R 22.5 LRG. SuperSteer MCU. Safe-T-Plus.