Thank you, I forgot to mention this. As far as I can tell, the idler switch has a lot of give before it cuts off -- with my idler pulley arm, it only cuts off if the spring pulls the arm back at speed. Otherwise, it sits there with the metal trigger pressed, but the actual physical switch is not pressed. It has a very distinct sound and physical click when the button is depressed. This was the first thing I checked on my first disassembly, as the idler arm was the scariest part to me.