I just built a modded Ambassador (see below) that comports to the schematic I submitted in the previous post (but no B500K trim). I am not getting any output and it appears that the problem is with B+ voltage. I have taken readings at the points shown on the right below, dbl checked all component values on resistors/caps/inductor and swapped out the NE555. The 9vdc (+/-) readings are consistent with my Particle Accelerator, but the 19v (+/-) readings are all 250v (+/-) in the PA (UPDATE: the upstream side of C1 is also 19.1v so its just replicated throughout the rest of the circuit). Any suggestions?