Front Servo Question

.............the new controlled load servo started for the 1971 model year 727s...u could block the hole in it....or use a spacer tube like the MP kit does or take it apart and use a spacer to block it........this servo only users 1 big outer spring.......also the center rod that works the 2nd gear band lever is probably 1/2 inch or bigger around....old style servo rod is probably 1/4 inch in diameter..........kim.....