I do not know if your this comment "I suggest to "beginners" or less experienced "engineers" (!), to read again and carefully Caesar II manuals," was directed at me, but I beg to differ on your suggestion that cold load values should not be tweaked. Even CAESAR-II has a very good tool "Operating Load" in hanger design window to fine-tune springs. Once analysis is done, if we want to tweak a spring, increase a load or decrease a load, we could use a number here to override the calculated dead weight at that point. This is a way to do some more precise work around rotating equipment.
I would also like if Dave or Richard can also give their viewpoint on this topic.