Drewmiester--
You are experiencing these issue because you are in Format 1. The "Q" is the lead of the thread and the "F" in this case represents the RPM. The G43 code is a Fanuc code for applting the tool length offset. It is NOT needed in Format 1.
In Format 2 there is no "Q" used for tapping, instead it is programmed like the Fanuc with an "S" for the RPM and an "F" for the calculated feed rate. The G43 is required to apply the toolength "H" code in the Fanuc style.
Neal |