[Arran]

The filament current is 150 ma, so .15 Amps, one section of the candohm is across the pilot lamp, as well as being in series with the tube filaments, the other section is only in series with the tube filaments, no portion of it is connected to the chassis, only to one side of the power line. Don't use the diode, that's for sets with a ballast tube that need to drop lots of volts, this set of tubes needs 95 volts to function correctly. keep the section across the pilot lamp the same as the factor specs, maybe use a larger one for the other section for more voltage drop. Of course an easy way to get rid of an extra 15 volts if to swap the 35A5 for a 50A5, then you only need the section across the pilot lamp.
Regards
Arran