I’m in the process of tweaking and repeating with things - but this has happened in multiple runs with various settings. I do NOT get an indication that it is “too complex” but it is still missing things. which feels like a problem. when I print this if I put both rulers (which were a copy/paste/reflect operation in AI) and I print I can put them on top of each other and they display a complete ruler - i.e. different locations were picked at random not to be engraved - but no two the same along them. Bummer.