I have some extra's PCBs that I designed and had made. They are based upon Dennis' (and ChuckA's) design. You can see pictures of the finished unit here:
/g/TekScopes/album?id=291888. My multiplier design (like ChuckA's) does not need a tube tester (just a curve tracer). Feel free to email me, if interested.
There is another gentleman on here that sells a step multiplier that uses a switching PS to generate the high voltages.
