Solved the crash on rwy thing.... the new rwy object (several polys merged) I had made was 2-sided and some polys had normals to wrong direction

Now I can land, but I still only get 'ditched' results.
But then more air field related problems:
1)
Exported rwy shows entry points in ac3d, PolyID=256. Am I supposed to place F B and V entry points already in ac3d, or in OE (titles exist, but such objects are missing), or in TE?
If I use the exported entry points in ac3d, the triangles remain visible when the model is brought to TE and they are also visible inside game... I collided with them.
2)
How should the "silowet" group be built for a custom made air field? It is necessary for ...loadouts??? ..or was it mannable acks? Does it also affect the entry points or 'landed' / 'ditched' outcome?
So basically... could you provide a short basic step-by-step guide for building an airfield.. which parts done in ac3d, which in OE and which in TE... please!