John wrote:" Does mainline pressure increase when the brass ferrule gap
is wider or shorter?"
John - The cable increases the pressure as it pulls an eccentric cam
acting on a valve inside the box. So I believe in answer to your
question, yes, if the gap is wider between the cable sheath and the
ferrule on the inside cable you’ve placed more tension drawing up the
cam etc.
Happy Trails,
Paul Spitzer, AZ