I am trying to modify the standard Fanuc post-processor from HSMexpress to work with a Bridgeport Ez-Trak system. I have gotten most of the problems resolved but I am stuck on an arc issue. Essentially what happens is that the Bridgeport will interpret any arc that is less than 180 deg and called out via a radius correctly. If these arcs are called out via I, J, (which I would prefer) I get major errors that manifest as arcs that get progressively 'shallower' (ie they are not really arcs) and/or are curved the wrong way. The problem is that when I try to output a full circle the R arc segments don't want to link (I'm assuming this is due to an arc tolerance issue?) and I get invalid radius error messages on the Ez-Trak. So basically I'm stuck with arcs that plot properly but don't link or arcs that don't plot properly but do link. All of the code generated for testing has back plotted correctly so I'm assuming that the issue is something specific to the ez-trak. I have attached the post-processor that I have so far as a txt file. Any help or guidance would be greatly appreciated!