/// How do you want this bad news? How are the imbedded magnets in the flywheel? Could the bolt have damaged one of them? You need to know which cylinder is giving trouble. Do you have access to an oscilloscope?

You can check the firing of the flywheel pick up by putting a meter on the high side (battery side not high voltage socket) of the coil and observing the pulse of the trigger circuit.

Depending on the type of timing light you have it may be possible to pull the distributor cap and watch the rotor while cranking. You would have to use a grounded spark plug attached to the high voltage wire from the coil. Attach the timing light to that high voltage wire/sparkplug. You might, repeat might, be able to see which wire is having trouble. Aim the light at the slowly revolving rotor. Although that solution looks MickeyMouse, it will tell you if you need an engine analyzer with an oscilloscope.

In this case it would be a good idea to replace the pickup before pulling the flywheel. I don't know enough about the flywheel magnet system to help you more, sorry.