D-2 type air regulator problem

[dcwilkie]

I replaced the old Midland air regulator with a new D-2 reg. Started the Deuce and built air just fine. Pulled it into the driveway (after warming up for 5 min) and the air warning buzzer went off.
I used the brakes quite a bit getting the deuce out of the back yard, but still, that doesn't explain the drop in air pressure and the slow build back to 105 psi.
Is this just a simple case of increasing the air reg's factory setting some (maybe a 1/4 turn to the right or so) or did I plumb it in wrong?
I plumbed into the REG 2 port and the one marked UNV (IIRC) on the bottom. The REG 1 port is facing the firewall so that one's inaccessable. I tee'd into the REG 2 port with the outlet lines. Ended up having to scavenge a port plug off the old reg to have enough to plug all the extra holes in the D-2.
Advice solicited!

 

[Floridianson]

With the black cap faceing up first port unloader next three down are exhaust and the bottom three RES.
If you have them right increase pressure I like 110 but 120 seems to be the norm.

 

[mikepelchy]

Pre-1975, the typical requirement for pressure buildup was from 50 to 90psi within 3 minutes with the engine at an idle speed of 600-900 rpm.

From the continuous braking and low engine speeds, I'd imagine the compressor is performing as it should.. if you feel like you need more air for such braking applications, the easiest thing would be to look at adding another tank otherwise you'll need a newer air compressor

 

[Heavysteven]

Any installation photo's i purchased a new air regulator last month. Popped the hood and found there completely different. I thinking i have the older version as well.

 

[Floridianson]

Any installation photo's

Can you pop a pic of yours.
I have seen three different set ups on compressor but air gov. still works the same ports.