Ok, well back to the knot -- I was able to complete a 9Lx8B 4-pass knot with the tutorial by adding in the extra overs and understand between the ends.
During this time, I also discovered the "reverse interweave", described in one of the Hought books...it basically centers the passes between the ends.
I think by applying the same technique, I can probably make a 3 or 4-pass knot in the same way, so that it is centered.
I'm trying to figure out how to make it have two colors per row that are centered and without "doubling" previous passes. Maybe I'll figure it out before I die. lol