Hi Finema, Flow is sensitive to what is called the "parameterization" of the target surface, which basically means if the target surface has control points with some compressed together and some spaced apart from one another that will result in a corresponding compression and spacing in the result.

The easiest way to solve this is to run the Rebuild command on your profile curve before you revolve it to make your target surface. One property of the Rebuild command is that the result it produces will have "arc length" parameterization which means it is not compressed or stretched out and so that should solve that problem. The revolved surface that is constructed from the rebuilt profile curve should behave better for you than your original one that had some control point editing done on it.

- Michael