Hi Dick. Glad you enjoyed the thread. Stay tuned for more on Lita's upgrades when springtime comes
As for the cabinet support, our Lita had no support or the holes for it which lead me to believe not all did have them. Apparently when your boler was built and where may have had something to do with that. I suspect the various manufacturers may have started putting them in at some point to prevent sagging of the roof.
Maybe someone out there has a more definitive answer. Ours was built at Glasfab Industries in Peace River.
That being said I did build a custom support because I didn't really want to have any future issues.