Hello. I read your post about having a file with parts and diagrams for a Monitor 30 heater. I was wondering if I could get that file from you? A freind of mine has one and wants to use it. I'll make sure I pass on what you said about this model (scrap it). I've looked at the combustion chamber and it seems clean and doesn't look like it was used a whole lot. I have a 441 myself, but looks a bit different inside. I'd be more than happy to start a new thread if that's what I should do. Thanks a lot. Marc, also from Bethel, just in Maine :-)