Refreshed 20v blacktop first start..

[Ivan141]

That sounds like it might be a power issue, firing all 4 at the same time might be causing a voltage dip that disturbs the coils? Just spitballing here though.
I've read about coils drawing up to 10A during dwell, multiply that by four and you have a very serious peak current draw that could easily pull your
voltage down, especially at the coil since your coilpack wiring is likely not specced for such high currents.
What size fuse are you running to the coils at the moment?