Flow--> Next Level Problems

 From:  Heiner (BILDERMENSCH)
7398.1 
Hello there,
after some starter problems with the flow command, i was able to archive what i want and I must say, that flow is working very elegant!
What brings me back here is a problem which is hard to describe. Its basicly that flow is working but producing some weird results, as depicted in
the picture. There you see the the basic flow shape and the surface it gets flown over.
In the picture you see the flow shape as well as the surface.

Some advice how I could avoid such weird results would be nice.