One the N20 1:1 is fine, just awarkward that the cleat moves with the traveler car.
Most of us have changed that back to mounting the cleat in the center of the rear beam. I did on both the 20 and the F18 (I had one old 6.0 casting mount I used on the F18 and bought a Kevlar composite center mount from Layline for the 20)....and it's actually 2:1.
