I have mastercam V9.1 sp2 level 3. I want to use the boss 5 post. I have managed to edit some errors out but now have a problem with arc movements. In xy contour the machine runs fine. I did a "wave" type profile to check the xz plane. It outputted G18 but did a profile in the xy. Any help would be appreciated

Could you tell me how I edit a post processor. I have the generic boss 5 post (mastercam v9). It is outputting g70 for a metric drawing. Also it is giving 4 decimal places. I have been into edit, pst and tried to change the Fs2 to 0.4 0.3 but this does not work. Any suggestions please.