RE: Fly recipe needed
A few years ago I was in a Canadain and USA fly swap. There were 20 Canadains and 20 Americans in the swap. One of the flys I received was a Canadain Leech. Here is the pattern for the fly that I received.
tail....brown marabou with a small amout of pearl krystal flash
body...redish brown mohair with the fibers brushed and going back toward the tail.
Hope that helps!