Any way to change grbl settings in Easel without connecting to the Xcarve?

Is there any way to change the grbl settings that Easel uses when generating/exporting gcode without connecting to the xcarve? I am using Easel to generate code to run on a linux box that has no internet out in the shop. I have some shapes that have relatively small holes “drilled” in them with a 1/4" bit, and I want to set the curve tolerance setting ($12) lower than default for them to se if I can get them closer to true size. The obvious work-around is to enlarge the holes in Easel until I get them the right size in the carve. Is there another way that isn’t just a work-around?