I've recently purchased a beautiful 5x7... a Thornton-Pickard "College" mahogany and brass 'woodie'. I got it for a song, so I have no complaints, but I'd love to get the shutter working again. It's the classic Thornton-Pickard "Time and Instantaneous" rollerblind shutter, and the spring is kaput. This is not surprising, as I believe the 'college' model was in production from 1912-1926. So I need to fix the spring and replace the curtain, as it is quite worn and full of tiny holes. Here's my other problem...I have absolutely no idea how to go about doing this. Can anyone offer any suggestions? Is there a good site to look this kind of thing up on? I live near Toronto, Canada, and have found one repairman who says he'll fix it for $200-300, but I'd like to do it myself if possible. Any suggestions, information, etc., would be greatly appreciated. This is my first time handling a large format camera, and I'm dying to get the thing working!