No, I did not sort it out.
I corrected the spread manually in assets file and started testing Z1 on demo account.
I run it on AWS LightSail for the past 3 months and ~40% of the account evaporated. It's very much different result than the one shown in the manual.
If Z1 is not sensitive to starting conditions, then I need to check why am I seeing such a huge difference between reported Z1 results and the one I saw and it took priority over incorrect EURUSD spread.