Models for unity

I’v been trying to create some models for my game, i have succeeded with that, but when texturing in cinema 4d and importing later on into the unity engine, it flips some of the textures out or doesnt place them in the right location or with right vertical width etc…

Here’s pictures about the problem

As you can see on the second picture that the left block is stretched together but in cinema 4d it looks just fine.

@Hardstop

It would help if i could see what your projection is like on the box that is stretched, but i have a feeling that tutorial on my site might help you.