See the difference!
From close up (with shadow!):
From far away:
The left one is the lighthouse imported into gr2 files, the right one the common dat file.
Additionaly I have added an AO- and a Normalmap.
Of course there´s quite a room for improvement.
Especially concerning Blender, I´m not fully aware of what I´m doing.
Next step will be to understand how this bones-stuff works for adding the lighthouse-flare.
Because I´m intending to place a seperate model into the library, I´ve removed the lense from the lighthouse.