Some may not be listening. The concern is not with the steel parking pawl, The stress is on other parts that are responsible for moving the pawl. Once the pawl is weighted up while parked on a large hill, it takes much more force to move it. The stess is then on the shifter, shifter cable, etc. Now since you took this to geekdom, if I need to move the shifter and it pulls/pushs a cable and lever. . . correct me if I am wrong but isn't that tensile. . .