I currently can't sphere/cylinder map this type of chart/cuts

[micheus]

Thanks, it became much more light to work.

ggaliens, as perfect as the sphere the "8" must be too. The two poles must be the same diameter as well as they must be a perfect circle. The "meridian" must be flat. That will ensure the resultant unwrap can be a rectangle. Otherwise, the boundaries of the unwrapped region will be non regular and by trying to find the better alignment Wings3D may rotate and distort it slightly - as you are getting.


Here is the result (I removed the hole/pipe - the union between poles)