Hey a little update; she's all brazed up except the flex and evaporator (still need to decide who's Evap is going on this!). So I began to pressure test the first stage.
I hooked up my N2 to the high side schrader and slowly increase the pressure.
Then something odd happened.
I'm checking my gauges on the front of this thing, and the high side one rises, but the low doesnt. So I figured I had a bad CPEV. Then I realized what it was.
The CPEV was set at 0psi.
So it was locking out the N2 flow.
With a laugh I opened up the CPEV and ta-da pressure on the low side. Fun to be able to adjust it all over. Can pop out the schrader on the low side and make N2 do whatever pressure I'd like. Like a miny regulator!
Pictures! (Sorry camera on phone)