I am trying to spawn a cube in a vertical shaft. I would like the cube to spawn in the middle of the shaft and just above the floor. I place the spawner accordingly, but when it triggers the cube will always spawn in one of two corners. The cube does spawn (if incorrectly) so I don't think space is the problem. In case one of the other objects in the shaft is interfering I have tried placing the spawner up in some of the empty sections of the shaft, but the cube still spawns in a corner. If I move the spawner into the corridor next to the shaft the cube will spawn normally, where I place the spawner. Any idea why this happens and how I can fix it?

I don't know what to tell you, unless I saw the vmf.

Valve uses a set of angled surfaces near the bottom of their shafts to straighten cubes up. You could try a similar solution, but have this angling surface near the cube spawn, the have it continue funneling through a tight shaft, as it goes into the main shaft. (putting it near bottom like valve does, the cube still ends up tumbling around potentially)

Alright, I figured it out after some further experimentation. I wanted to spawn the cube in a particular orientation, and apparently messing with the roll/pitch/yaw settings changes its spawn position in relation to the spawning entity. I just needed to adjust where I placed my spawner, so after a bit of guesswork I figured out where it needed to be (inside a wall) to spawn the cube in the right spot. Still, thanks for the help guys!