In the beginning, I had some of the same problems you've had with mozaik. I quickly realized the z was reversed but fortunately I did a dry run, not cutting anything. It was a simple fix in the post processor. Then I cut a test cabinet and quickly broke a bit. The default feeds/speeds are not optimized for this machine. It is a easy fix to change plunge depths, feed rates, and spindle speed though. Once I slowed things down it has worked beautifully. It sounds like you need to make some changes in your CNC tooling library too.