Making Walls Mesh

So I'm using the walls found in Trees/Destructibles. When put together, they cant fully touch. There is always a space between them. I can make them appear to mesh by making them 145% normal size, but that not only makes everything else look tiny, but it doesnt raise the collision size, apparently. I know that the walls in Structures work fine, but I want the designs used in the other ones.

Does anyone know how to make them mesh without messing with the size?

Press shift while placing them. It disables the collision. This works for any doodad also.

ARghhhhh so simple! Thanks a lot.