I had bought my Evo .46 last year for use in a Twist. Its now in a Sig Kougar. However, for what they say, they are full of BS.
If my Evo was broke in from factory, why was the low end needle screwed completely shut? In any event, I'd run a tank or two thru it and then adjust your needles. And, take off those silly limiter things on both needle valves. Mine took awhile to run half decent. I've been running 15% Coolpower lately and the Evo seems to me to run a bit better.

Dave...