So I have been getting my tune dialed in and on the way home from work today I was running a data log checking for KR and i look at my WBO2 and its running really rich, I looked at the scantool and for some reason it was in OL. I stepped in to the throttle and it went OL-Drive then right back to CL. I looked through the log and it looks like the bank 2 O2 stopped reading for a short period of time. could this be a bad O2? or is it an issue with my tune? there were no codes, and The O2 sensors were just replaced back in March and they probably have less than 5k miles on them. I attached the tune and log file.