Update: First I want to thank all of you guys for your help
I performed the leak down test and everything appears to point to bottom end piston seals.
exhaust: did not hear air
antifreeze cap: no bubbles
intake vales: no noticeable sounds of air - driver side
oil cap: definite sound of air.
I put it all back together with new valve cover gaskets and intake manifold gaskets. I also re-tapped the bad threads on the driver side head, that was easy breezy, it took me all of 5 minutes.
Same issues persist.
I'm giving up at this point. I have zero plans on changing the engine. I'll just sell it and pass on to the new buyer my findings.
Now I'm asking you guys the experts these questions that just have been bugging me because they don't seem to add up.
1) If the rings on the pistons are so bad, wouldn't they be allowing for oil to enter the combustion chamber causing for me to burn oil with smoke coming out the tail pipe?
I haven't had to add oil even though I drive it 20 miles to and from work everyday.
Absolutely no smoke on start up or driving or idling.
2) Why does the misfire stop as soon as I begin to accelerate or increase the RPM's while in Park?
I would assume it would become worse as I drive but instead the issue vanish while driving.