I will share my crude thoughts on how to make a template. Attach a stick/rod to pencil at a 90' angle. Then attach that to the shifter itself at the level where you want the shifter gate to be. Next, get a flat board to write on, and put it under the pencil. Then go through all the gears, and you should have a stencil of what the template should look like, because the pencil will mark down all the shifts. Did I make any since?