Tony, Contact Thomas Payne. He can give you some first-hand info on his Morton building he had done a couple of years ago. I was at Tom's place yesterday and the new building is NICE!
You can get some detailed information on his entire build
here if you have a couple of free months to read it. [img]<<GRAEMLIN_URL>>/grin.gif[/img]
I'll surf through it and try to find the page (or post number) where he begins to chronicle the new building.
Thomas is a great guy and I can assure you he will do his best to answer any questions you might have. He's also a member here (bb767) so you can check his profile for contact info, or PM me and I'll put you in touch with him.
EDIT: The saga of Tom's Shop restoration takes a number of twists 'n turns, but one of the early shots of the "Barn" is on page 39 (depending on your settings), post number 765.