Although we dont know when the saddle thickness changes were born, the thickness of the saddle is different from the recent and current products and the old Martin guitar before the 1970s (formerly abbreviated as Old Martin).
Current and recent years saddle thickness is about 2.7-2.8mm
Old Martin saddle is approximately 2.3mm.
Since the width is the same as in recent years, the difference is only the thickness, so you can change it by cutting the current one, but if you are adjusting the saddle to see if you have adjusted the saddle, it is difficult to sharpen to a uniform thickness even even with a slight amount of adjustment.
If you have old type items, you dont need to get the current one and adjust it.
Please note that we are not responsible for any damage during installation process