Thanks for following up and confirming. I will follow up once able to check timing and confirm the results.

 

UPDATE******* new ignition coil has resolved the issue...... I am very grateful for everyone who had posted suggestions. The original ignition coil had very consistent spark with an inline spark tester, but an inline spark tester does not show the quality of spark, only spark being present. Instead of testing with the inline tester, attempted to ground out a plug with less than promising results. Since the testing without the inline test was not a guarantee, I tested by plugging a plug in at the line where the plug wire meet the distributor and grounding it out, to see a weak spark.

I hope this information helps someone else.

 

 

thanks, again!