Another light bleeding problem

[Veggie]

Hi all,

I've been having a problem with light bleeding which I haven't been able to completely fix so I was hoping I could get some insight from other people.  Here's what the light bleeding looked like originally the bleeding is happening near the columns on the balcony.


and


I tried clipping the wall next to the balcony as someone suggested but it didn't work.  After a quick search I learned that I could set the wall to a func_group entity and set the _lightmapscale to 0.1.  This fix worked in the alien base seen below but didn't work completely in the human base. 

bleeding in alien base is gone

some bleeding in human base is gone, some is still there
How can I get rid of this remaining light bleeding?

[Odin]

The bleeding occurs because the lightmap is being stretched across the same plain. Try clipping the floor where the walls touch(you should be doing this anyway).