Jim is one of the best guys I have had the pleasure to meet. His shop is was always one of my favorites when I lived in AZ. He is most definitely one of the most knowledgeable Winchester collectors in the US, the book writers ask him for advice.
Agreed on the shop. I moved away from Tucson in 1984, it was usually the first shop I'd stop by on my weekly rounds. I learned quite a bit about Winchesters back then thanks to Jim.