Painting Folliage - Trees spawning mid air on top of eachother

[Fairchild]

I have a few tree static mesh models that I am trying to place as foliage using the paint tool.

After painting an area with trees I notice several will spawn on top of other trees about half way up the trunk. I have collision set to Block All. What exactly is causing this? Very annoying.

[MostHost_LA]

Disable the option to paint on other foliage and static meshes.

[Fairchild]

Thank you