Entity won't emit sound, too deep inside wall.

[Calikid92]

I have an entity that emits a sound. When spawned with a spawner onto a wall it will play a sound, but sometimes it won't because the entity is too deep.
Is there any way to set the position outwards a bit more?

ent:SetPos(trace.HitPos + trace.HitNormal)

[editline]7th February 2014[/editline]

Actually I'm not sure of the cause anymore. When spawned on a wall facing a certain direction it will not work. Any ideas?