Phillip P. Dimor , Feb 04, 2004; 07:30 p.m.
A 5x7 Speed Graphic is a sweet find! And for $75?! I can't help you with the leather, I've always avoided peeling it up. As usual, everyone will guide you to graflex.org. There are some good posts on the forum there as to peeling and glueing the leather down.
As far as the focal plane shutter goes, I cleaned mine with Lemon Pledge. It worked like a charm! Originally, the focal plane shutter material was dusty and dry. After lightly (LIGHTLY!) brushing and wiping it with lemon pledge, it became pliable again. My Speed Graphic works like a charm and I don't own a single lens with shutter. The focal plane shutter is pretty much dead on too. Search for "Andrew Davidhazy" on Google. He has a technical section on his website with articles for testing focal plane shutters, among other things.