I'm getting the reading with the positive lead in pin 3 and the negative in pin 2. Turns out the battery on my multimeter was dying, I changed it and my readings are normal again.

I have checked for leaks once and not found any but I will try again.

I did unplug the O2 from the passenger side carpet, yes.

The distributor cap was indeed on square.

It hunts at idle very slightly. I would say less than 50 RPM +/-

I will try testing the CTS with you advice.

The misfire is irregular and only occurs when accelerating very rapidly from idle. By irregular I mean it is not evenly rythmic but does happen everytime I floor it in idle. If I do a sequence of floor, let go, floor, let go it backfires from the intake after about the third time. I don't know which cylinder it is. After 2500RPM I can't get it to backfire regardless of what I do.

Thanks a lot for your help, I will post the results of the CTS test.

Thanks, Andrei

__________________
With Regards