1962 valiant shifter change

What keeps the shifter from going by the gates for 1st/reverse and 2nd/3rd gears and ending up in front of our behind the gate/ shift levers on the 1961 valiant floor shift?

Picture shows shifter and all components installed. What keeps the above from happeningView attachment 1715121161


For those interested, 1962 Plymouth Valiant V100 shifter and transmission change is complete. Thanks for the help to everyone involved!