"Do take a look at the picture again though. If I move the rod toward the pivot point of the motor it is going to get more sensitive."
If you want to break a tight nut off of a bolt, do you put a short pipe over the handle of your ratchet or a long pipe? Having the rod out at the end of the lever increases the leverage on the lever making the foot pedal easier to push down. Try the other two holes, what do you have to lose?
No one lives forever, the trick is creating something that will.