No coil wire spark (in the mornings)

Did you increase the gap?

Decreased the gap

Hmm, that blows the theory that the colder, denser air with more humidity is more conductive and so increasing the gap would mimic the air qualities later in the day.

I have a couple of Proform distributors in my hobby cars. They work well, no issues so far with them. And they were significantly cheaper than the name brands…

Thermal expansion and contraction maybe?