I spoke to my dealer today and he said exactly what you say except he thinks there was no spacer and the cab deck has collapsed. Quadra's "Jim" called me today and said if the air bag mounts were still there to add a tube spacer to each one and weld. Otherwise get it level and add what it takes to fill the gap and tack weld. In the morning when it's a cool 90* I plan to crawl under there and check it out. I will keep you informed and thanks for the reply!