I found Go West on a used Kino video at Spin Street. Also on this disk are The Scarecrow (1920) and The Paleface (1922). Buster Keaton directed and starred in silent and sound films, but these 3 are all silent.
Go West is at youtube broken up into a lot of parts. Part 1:
The other parts are linked from here.
The Scarecrow in 2 parts: