Just completed build a Kabtronics Nixie Clock kit. A true challenge with almost 3000 solder connections. Now I have to work on a better way to display it rather than hanging it from a nail in my workshop
Did have one small issue. It seems that no matter where I place the a display off diode, the display turns off when the diode is not in the current hour's display disable position. I put a 100K pull down from ground to the side of R287 opposite the base of Q125 and it seems to fix the problem.