Just before the WW SSB I made the final measurements on the Yagis together. Both of them shows better result. We moved the 10m one with 1m higher to 18m. This must be the reason for the SWR change. But on 20m nothing serious has actually changed I only dismantled the crane from its close proximity. The other motive of the improvement might be that now all the connectors were properly wired and soldered while the MFJ had only temp cables and connectors back in Sept.
But anyway I’m happy hitting “K3LR standard” with the SWR rate.