Steering wheel options for us Early A drivers

well that large spline is to put the wheel in the middle of the box for equal turns and turn signal cancel in both directions .
yes, i was able to line up the new wheel to the center. I tested turning and the cancel is working for both sides perfectly. My issue is the horn wont shut off. I wonder if that little roller contact is not able to reach the new steering wheel contact plate?? would that cause horn to constantly blow?