Hi Stefan,
Once again thank you very much for your help!
It seems that now, after applying your advice, I am close enough to the original distribution and the mean starts to resemble the proper value from the Amalthea benchmark.
From the conceptual point of view, it is interesting for me how to understand such high value of pRemainPromille as 0.5 in AMALTHEA_Democar.amxmi (whereas in another file that I have it's reasonable 0.005). Does it mean that the Weibull disctrubution (and, at least, its parameters) is, in fact, a poor choice for this particular case?
Best regards,
Piotr Dziurzanski