Gee, Angier, I feel like a chump.  ;-)

I just used a tape measure -- which worked okay but your technique is better.  I also told myself that the Sky Ranch policy of replacing the hose even if I got the length wrong would protect me if I screwed up.  Fortunately, my measurements were close enough, although a half-inch change might work better on a couple of them.

It is definitely interesting to see how the parts all interfere with each other.  You get the hoses routed only to discover that the control cables for the engine need to go in the same place.  Then you move things and later discover that air hoses for heating and oil cooling want to go in the same place.  Then you change it again and the wires want to go in the same place.

Sigh...

- Rob Wolf