Solenoid Valves do get host but I don't connect mine to the regulator so it doesn't bother me too much.
I was tipped off on another forum to connect the needle valve directly into the regulator and to connect the solenoid inline.
You can see here that the regulator has the needle valve coming from it and then 2 inches down the hose the solenoid valve is inline (resting on it's own timer)
Andy