I had a guy come out to see my project and offer advice on certain aspects. He’s now strongly advising me to cancel my order of a Switzer boiler based on a conversation he had with Gary and answers Gary gave him to some questions he had. He seems to be concerned with the fact the boiler is made of carbon steel vs stainless. He also says it’s antiquated technology and that the diameter of the exit of boiler that hot water flows to is too small and that it’s not efficient at all to try and move that much water through a small opening. Any thoughts? I did look at Heatmaster and those are made of stainless - but don’t have the storage that Gary’s boiler has.