UVMap issues, and ideas..

[micheus]

ggaliens, I'm not sure about how you create your objects and unwrapped it, but I create some similar to try to show you that for this kind of regular object that distortion should not happens:

even using Unfolding or Projection Normal in AutoUV (without set any cut edges, since the hard edges are used for that too) (2nd) you should get the four pieces as shown in the picture (3rd) and by using Stitch in the base triangle you should be able to glue the pieces and get a regular shape as shown in the last box (4th).