Why is there no FX Regulator tester?

[Privateer]

Now I guess with the Guns that have a gauge for the Reg that's a mote point.
But what about the earlier Guns like the SteamLine?
It would also be nice to have something to test early Dreamlines without doing the whole bleed air routine.

 

[miksatx]

My wildcat mk2 has a port that you screw a gauge in to set and read reg pressure.
Stock off you can see a brass Allen head. Are you sure the Dreamline doesn't have the same set up?

 

[Privateer]

Now my Dreamline has the external adjuster and gauge but a Streamline does NOT have that.
Mine being an older Dreamline they say bleed the tube before adjusting.
A way to test them out of the tube would speed things up.