Help please, plug reading wizards!

The base ring reflects what the chamber looks like.
As mentioned oil is being sucked in, whether it seal or bad guide or cracked ring...maybe that's your tick/chick chick sound probably heard at deceleration?
Dont use iridium plugs, just use the v power NGK.
Tune primary for crisp off line and snap, without going wot. 'Stay under half throttle 'Then tune for wot by getting up to a 25 mph cruise and stomping on it. That's the easy way.. 2nd to just reading the tune instructions from edelbrock. The plugs in the end should be grey/tan, ceramic color tan brown ring at bottom and clean up to the top..tang should show 2 marks, 1 right at the bend near the end for initial and the 2nd the total just at or below the bend in the tang near the base ring.

The pocket porting part with big valves scares me. I've seen reversion so bad fuel was spit back out. Mostly bowl blending does little for a slant. The airflow is found in the floor and the bowl isn't capable of being enlarged much at all..as is the roof.
Oil, yes...5 and 6.
The all over the place fuel distribution?
The port work or the intake manifold...
Remove one from the equation and you'll have your answer.