So i'm trying to overlap and past these lowpoly thrusters onto each other, Their Made slightly angled so I have to Flip the UV horizontally so they match.
The problem was that I was trying to copy ctrl+c and paste v+ctrl onto each other but It left a border behind, Why did this happen???
I had to go back to check in my other programs if they weren't symmetrical but they are?! Then I tried to copy the edges,vertices to the other one and that just crashed 3d coat instantly!