All good points (no pun intended). Some of my early experiences with similar symptoms:You may be getting spark, but are you getting the spark at the right time and place? Your timing could be off, or your dwell could be off.
I had a lot of trouble on my D-Jet (same as yours) ignition with the points. The points under the distributor cap need to open and close for a specific amount of time at just the right time for best results. Breaker points type ignitions are an older technology, so they aren't thought of by many mechanics.
Make sure the timing is set right. There have been many stories of people getting the plug wires one post off at the distributor, or getting the dizzy itself one gear tooth off when replacing it. Just something to look for. There have even been reports of not getting the cap or rotor seated correctly.
Check to make sure the wiring is good, there is a green wire from the dizzy to a switch module behind the driver side headlights that has been known to have insulation crack off, the conductors break, and the terminal go bad. It's exposed to a lot of heat over time.
You should read through the thread that Proctologist assembled in EG (stickies) in D-Jet section. Perhaps the pics will help in understanding what we are talking about.MBGraham you lost me after simple wire checking which i just did. also