just rebuilt runs bad

I suggested earlier, might be a bad condenser. There are only a few component, here

A good coil, and hopefully, a matching resistor

A good strong battery supply

A distributor, with properly opening and closing points

A good condenser.

You can easily check if the points are set, just look at them, and use a feeler. Use a light to determine they are actually opening / closing.

Use a clip lead direct to the battery to eliminate wiring harness problems

If you are sure you have a good coil, good battery voltage, and the points are doing their job and NO SPARK, then its time to gamble and change the condenser.

The engine is firing so it must have spark. I'm going to round up a stock coil, ballast resistor and another condenser.