Youve got to love the Ruskis for continuing to make Nixie tubes.. i love them too and is the main reason why i sourced a RALLY COMICS.

That schematic comes out far too small for my eyes.. so can i ask what chip you are using to drive the nixie?
I bought nixies etc from Ebay to make a clock.. also sourced a HV driver and the 7141(? memory!!!!!) chips very cheaply