Morning all, I keep having issues on thin walls where the inner and outer faces are not joined together and leave a small gap. Picture below illustrates: You can see that the thin wall has a gap, you can push a fingernail into it. The thicker section has over extruded infill on it. I'd like to stop that too if possible but no.1 is to get the walls joined together. I'm using Simplify 3D and you can see that it shows the gap too! Any ideas how to fix it? Under 'Advanced' in the process menu I've got "Allow gap fill when necessary" set to 50% Thanks everyone!