Still waiting on my gauges... haven't left USA yet
Managed to also check the timing and that is correct.
In the last two days, at times the car has behaved normally, idling at 950rpm, no popping on deceleration.
This actually annoys me more

, would rather it stay the same issue than an intermittent issue!
Can an Electrical issue cause the symptoms I've been having?
I also removed the vacuum from the Distributor and that had zero effect at idle, I assume no vacuum at idle.
Still planning to report Pressure tests when gauges do show up.