Requesting help with lighting

Hey jak,

I have fixed most of the problems i.e. the dark lines, shadows disappearing, general quality. I am however still stuck with some meshes getting lit differently (see image)

Now the ceiling is made out of tiles so it is not one solid mesh I know it will probably be fixed by making it one solid mesh but it is also happening less apparent in other places. I also cranked up my directional light’s indirect strength to 8

Do you know of a way to fix this?

https://s24.postimg.org/53kgqsm6t/Indirect_Lighting_Issue_02.png