I have make a little test with 4 dots aligned with A tower, B and C tower. Distance W and S are the same in the stl but not in the print. I have tried diferent values of diagonal root but S always is smaller than W, and all S are equal (more or less) and all W are equal (more or less). How can fix this problem?

[![enter image description here][1]][1]

  [1]: https://i.sstatic.net/CPHTi.png