Navigation Mesh Volume not covering entire object

Hello, I’ve been having a problem with the NavMesh Volume covering a 2D Block placement system in my project. I will soon add Ai in the project but the NavMesh covering the rigid blocks won’t completely cover a block. I’ve tried numerous solutions such as enlarging the blocks in the scene or adjusting the agent radius and cell size options. I am aware that the objects in my scene aren’t exactly smooth inclines/ramps or anything, but I’m wondering if there’s an option I haven’t played with that can cover the entire block. Please refer to the pictures I attached to further understand. Thanks a lot!

Engine Version: 4.10

P.S
~ I know my engine version is old.

I have no clue what happened to the description but here it is:

Hello, I’ve been having a problem with the NavMesh Volume covering a 2D Block placement system in my project. I will soon add Ai in the project but the NavMesh covering the rigid blocks won’t completely cover a block. I’ve tried numerous solutions such as enlarging the blocks in the scene or adjusting the agent radius and cell size options. I am aware that the objects in my scene aren’t exactly smooth inclines/ramps or anything, but I’m wondering if there’s an option I haven’t played with that can cover the entire block. Please refer to the pictures I attached to further understand. Thanks a lot!