The starter switch safety on the brake lever does effect the flow of voltage. Try lightly engaging the lever and the results is a weak output of the starter motor torque. Not only that, but if you don't apply enough pressure the engine warning light will flash the code low voltage. This has happened to me. I immediately cleared the code and applied normal pressure and got the usual hesitation while turning over the motor. I quickly killed the engine and pressed even harder and there was no pause while turning over the motor. My guess is the surface area of the switch contact increase the further the switch contact travels through the contact point. This would explain the resistor like action I get from light to heavy engagement of the brake lever. All I know is the hesitation doesn't occur with a heavy engagement of the brake lever or when applying both levers with moderate pressure.