New avenger-x Depressurize and reg still has air OK dry fire 3 or 4 times and no air. Screw reg in all the way then 1/4 turn open.Fill to 4000 psi and reg is already at 1700 psi.Repeat and open only 1/8 turn fill and reg is at 1700 psi.I am trying to start at 1400 psi.Any one know whats going on.Thanks!