Building Collision

Hi. I've read though all the threads I could find on buildings and collision size and couldn't find anything to help me.

Ok, I have a building which I made smaller but the collision size stays the same and my unit cant get any closer to it. I want to either change the collision or remove it altogether and use pathing blockers instead. I need the unit to be able to get closer to it.

I've tried changing collision size and it does nothing.
I've tried using the building model on a unit and changing the collision size which will not change.

I'm out of ideas, pease help me. Thank you.

Buildings have a separate value called the Pathing Map. You can see the size of a pathing map on a building by placing the building and hitting "P" in the editor to show pathing. Find a building who's pathing map you want to copy, and copy it's pathing map to your custom building.

Well do. Hope I have enough buildings for it all. Thank you.

Also can I just copy the farm and use it for all my buildings?