I am running MasterCAM X7 for my G-code generation and Mach 3 to run my machine. I have been running some 3d parallel programs for awhile and it was going great, but of course when I want to do 2D there is an issue. It seems that Mach 3 can't understand IJ commands and I don't know how to alter MasterCAM's settings to output R commands and whether or not they will be able to do 360 degree arcs also. Does anyone have any prior experience with a similar problem? Thanks in advance.