Yes. I forgot about ViaCAD. I'll look into that.

The example file I posted is unaltered in scale. Because I get random changed and updated pieces from my clients, it's crucial that I maintain a consistent set of standards throughout. So if I can avoid having to scale their work up, then it's all the better. That just adds some variables, and as you pointed out, the tiny size can have an impact on how the edges (and gaps) are seen by MOI upon import.

I need to check on the option to send you the original STEP file. Unfortunately, I have certain agreements with the clients, so it may not be possible. I hope you understand.