Slanted Cylinder Wall not Aligning (solved) Issued Solved. Thanks! ====== Hello. I have had this issue with my map so I been trying to fix this for the past two days with no luck. I have a silo ceiling pictured below. The inner and outer cylinders of the silo have been manually aligned with the grid using the vertex tool and has no issues. The red slanted ceiling is giving me a problem. I align it up using the vertex tool, but when ever I reopen the map/compile and play tons of vertexes are all off and I get tiny holes everywhere. Here is what I mean in game: Here is the object in hammer: As you can see the outer wall of the silo is the solid going all the way up. I can kind of get away with the holes since the outer wall is textured all the way up. But that is a lot of useless lightmap data. So I want to get rid of the textures in the back but when I do the player sees the glowing void/sky through the holes and makes the holes really noticeable. The slanted ceiling is a bunch of small 6 side blocks in which their end points should be aligned to the outer and inner cylinders. Here is a close up of the issue. All 4 vertexes have been manually aligned again and again, all end up like this after a close/open of the map. Things I have tried: Slanted wall is a displacement, no luck same holes appear. But the displacement was built out of these same blocks. Instead of a block I used a triangle. Came out to a scalene triangle in which the longest side was the slanted part the player sees. Also no luck same hole issues develop. Made the blocks taller/shorter which changed angle of slant, holes still develop. To me this is not complicated geometry but I am starting to think Source/hammer can not handle it. Can anyone think of a better way to construct this object?