Starting to rebuild the Allen distributor machine

Hi
We have an Allen Synchrograph distributor machine that is very similar to the machines you were rebuilding.
The strobe bulbs on our machine are broken and i wanted to know if you have any or know of a place that has some. We can adapt other bulbs if this is possible, with use of a resistor or other electronics to make it work.
We have tried small neon bulbs which work but have a secondary flash. The secondary flash is bright enough that an accurate reading is not possible.

Any help would be appreciated