Grs .correction from my understanding is the correction applied from the afterstart enrichment and coolant temp enrichment, and battery correction combined. I don't thiink it has to do with o2 correction. Only o2 correction will show what you want. Make sure your rpm set points for 02 correction are within the rpm range and the temps and the check box is checked, other wise you wont see any 02 correction. Also if there is ant afterstart correction being applied there will no 02 correction and you will be in open loop.