OMG WTF, if it's not one thing it's another Options

[Type 47]

so we've been battling a tuning issue which is being discussed in another thread, so I don't want to muddy the waters with another issue, hence the new post.

So, i'm sneaking up on this carb tuning issue and get the car idling to do the carb tune stuff and I notice this shxt...

I get the car started, rev it to 2-3K for a little bit until it establishes idle at about 1,200.

so I get out to start fooling with the carbs and notice it's not smoking with white smoke like it was the last time. Outside temp was about 50, now outside temp is 64ish.

It's freak'n spitting out oil. There is a spray pattern out the tailpipe about 12' long.

When we filled the oil I instructed 4 qts but not sure if son put in the whole 5 qt Mobil One container in. Also, on initial run he thought it was a little low, on oil, so we put in another 1/2 qt.

Engine has been sticking a (measuring) really high ever since.

Has a piston ring gone south??

Is the oil overfill causing this issue?

Why did this just start happening?