I guess I'm just old - but I still pull the plugs - even if I'm going over the logs to see what the wideband said during a pass. I keep killing O2 sensors and have to more or less "figure out" what each different sensor thinks before I can make changes based upon the logs. So I end up going off the plugs like always most of the time.

I'm pretty sure the raw fuel while on the 2-step is what destroys them. I can drive around and make WOT passes all I want, but 2 or 3 launches using the 2-step and another sensor is junk.