Initial timing

Woke up early today and spent an hour on cuda. Pulled Autolite plugs that have maybe 600-700 miles. I pulled them 2 weeks back and cleaned them and reinstalled. Pulled them and installed Champ RN14YC.
Fired up, no change off idle pops/n stumbles.
Hooked timing light lead up to all 8 wires, and as it idles all 8 wires/flash spark even/consistent.
As I increase RPM slightly/slowly above idle stumbles start and flash gets intermittent....
Removed factory tach wire, no change.
I'm leaning towards coil?
Dist pickup?(But when dist is removed and I hook ohm meter up to elec ign leads, it beeps consistently when I spin by hand.)
I'm pondering the VR as well? I am running the 70+ alt and VR(I've read it's more reliable)
Thanks all

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