Thank you Mr. Rokas,
you sorted it that's unbelievable..
You resolved all the problems I had.
Thanks a lot to clarify where the main problem was ..
- "curve steps" in RC and
- "turbo smooth" terrain don't have enought details and
- "spline straight horizontally"...
Thanks i believe someone will happy for this topic
best regards P. and thanks for alternative topic I will try.that approach