Rob.. The diode placement on the hv-4 board doesn't match the layout..downloaded the Layo1 program, ran it, loaded your board and there are mismatches..extra traces, extra resistor, so you may have mixed a previous board with my circuit.. That's what I found so far.. tested the board again and still no trigger. I have high voltage to the cap, if I short across it after I unplug the battery and timer board, it gives a large spark..presence of being charged..still not sure what it is..same trigger circuit added as I have on mine but no triggerring yet.. Oh well.