Thanks for the info. Here is the specs for our EZ pull lever:
Distance between pivot and ring finger: 5"
Distance between pivot and cable barrel: 3/4"
The EZ pull lever gives about 6.6:1 ratio between movement of the lever and rotation of the actuator.
Your setup without the extension provided a 3.5:1 ratio. With the extension, you're at 7.7:1.
I'm sure that given your low power output, the 7.7:1 ratio is a huge advantage.