Hey John,

I had experienced your issue as well, and I cruised through the code and I managed to find out how to fix the error.. I adjusted the code as follows

The issue is a flag reset in spot drill. the first one comes out fine, but then the rest are drilled to fill drill depth.

?

In pcb-gcode.ulp you will find this sequence:

//

? if (SPOT_DRILL == YES) {
??? if (m_first_spot_drill) {
????? output_drill_first_hole(drill_x, drill_y, SPOT_DRILL_DEPTH);
???? // m_first_spot_drill = NO;
??? }
??? else {
????? output_drill_hole(drill_x, drill_y, SPOT_DRILL_DEPTH);
??? }
? }

///

?

The underlined line is the culprit. it spot drills one time, then spot drill is set to NO, so it doesn't do it anymore. I got the correct behaviour by commenting out that line. All the drill files are to the correct level. It works as it should on my machine - running on the GRBL config.

Hope this helps!

Joel