Magnepan 20.1 X-over

I am thinking about replacing the U-shaped jumpers on the crossovers for the 20.1's.  Does anyone know if there is a direction of the signal path?

Depends on if you're in the northern or southern hemisphere.
but.. WHY?

different jumpers will not affect the sound

what you really want is the 20.7's
Consider bi-amping the 20.1's. That will both eliminate the need for a jumper, and drastically improved the sound of the speaker. And it's easy!