Great stuff and don't be afraid to give stuff ago, if your unsure just set the Z height high at first so it cuts air. Give it Few weeks it will be second nature then in few months you'll be doing stuff that blows your mind.!

Your problem must have been you wasn't loading G-code and running something in memory because the file extension wouldn't change the actual G-code produced by CAM. This is why I don't like these DSP controllers.? You can't easily see what's happening regards the G-code and machine setup.

This would have been obvious on Screen with Mach3 or Linux cnc.
Not saying convert but it's the little things like this that often lead folks to convert.