If it fired by pulling the trigger, then the ground lead and torch lead are hooked up properly.
Originally, mine would NOT fire manually or within firecontrol. When I switched the ground lead and torch lead around, I was able to manually fire the torch and then able to test it with firecontrol with a successful test, voltage wise and fire wise.
If your plas fires and you think you have a high voltage issue, I don’t think I’d be looking at the plas machine too much. I would be verifying the div box is plugged in correctly, considering this is the portion(as I understand) that filters/reduces the high voltage and lowers it to the correct voltage to the table.
I’m not sure if this would cause your issue, but it’s worth confirming the wires are correct.