My Elev to Brake mix is switch on when the gear goes down. However, I first installed an electronic brake valve. Given the way it works (like an ABS system, only puffing off air for proportional braking) I could only get one maybe two stops from a large can of air. I switched to a U.P. 6 brake valve and servo. Now I can get well over 10 good hard stops with the same can of air and still have 60#s left. Am I missing something here about Electronic brake valves? If I had used the Elev Stick on that Electronic valve I would have had no braking air left by the time the plane touched down.