[EricH]

You must use the primary Norgren regulator to regulate your pressure down to 60 PSI for the working side. That's the way the rules are written--see <R76>.

You could try asking Q&A for their take on this--I think they'd say the same thing I just said. They may allow you to use another regulator--if they do, print out the Q&A and bring it with you to hand to the inspectors.

Your best bet right now is to contact other teams going to your event and see if they have one you can use.