[Kevin Sevcik]

As an answer to the original question, if a secondary regulator downstream of the double solenoid doesn't work because of the directionality of the regulator, you could always use two single solenoids and have one supplied by the secondary regulator.

Also note: I recall accidentally hooking a regulator up backwards once, and it completely failed to regulate pressure, so I think the regulator after the double solenoid should work. If you want to have more than one cylinder set up like this, single solenoids would be the way to go since I think you're limited to just the regulators in the kit.

Also, to everyone else, I can think of one good reason to set up a cylinder like this. If you know for certain that you don't need 60psi on the retract and only need 30psi, setting the system up like this could potentially save you a lot of stored air and battery power, depending on how often you cycle the cylinder. It works out to about a 25% savings for every extend-retract cycle. That could potentially be very important.

Edit:
I'm a slow typist, but I swear I thought of that before he posted his intentions. Honest.