(OK... I'm downloading the huge zip and will check that myself later )
A good move
Be careful with the installation of the Library.
You have to replace the 2 folders (examples, lib) in:
C:\Users\..user..\Documents\LTspiceXVII\
PS: make backup of your own models/parts.
Do not touch folders in:
C:\Program Files\LTC\LTspiceXVII\
After the start LTspice will reindex the new Library.
I already did that in past, but I prefer to add just the models I need.
BTW I use my own paths and just add them to the search path in LTspice settings.
In any case I see that there are 4 different TL431 models which added to the one I've been using so far are 5.
No wonder the same circuit may produce so different results...
I guess the only way to know which one works better is to build a few different
real circuits and compare the results.