Low pressure system regulator settings

ive got a 98 custom with an ebolt, GTA low pressure system and a
viewloader regulator and i played for the first time in a year last weekend.
my gun took 3 fills of my 72/3000 tank to shoot less than a case of paint. i
want to preface this question by saying that this is the first ebolted gun ived
owned and i dont know how much gas this setup would use. what should
my regulators be set on for the best efficiency because i know its wasting
alot of gas?

To set your Viewloader reg, turn in the marker's velocity screw approximately halfway and set your velocity from there by adjusting the regulator's pressure.  Then, you can make small adjustments with the velocity screw.

As for the reg going to the e-bolt, I'm not sure what you should do.  I would say zero it out then crank it up until you can get the marker to consistently cock, and then up the pressure a tiny bit more just to make sure you have plenty of air going to it.