Well give the guy a chance to contact Brandt before you tell him it's no use. I know the owners and several techs over there and they are all great guys. Besides that, the Zbox was an industry changing design of which they are very proud-I'm sure they'll enjoy a chance to keep one alive in the field.
2 of the last 3 that i have worked on had all their tubes smashed by the genius sheetrockers and the third a welder burned a hole through the main air tube and stuck his welding rod in to plug the hole
I worked on a ton of these as a building engineer in Dallas during the '80s and 90's. The problem I most encountered was the pneumatic system had been butchered by service techs that didn't understand the system. Give me a call or we can discuss it the next time we meet at Lakeland.