Uncalibrated power meter

I didn’t realise my power meter needed to be calibrated very often and how I have some really spurious power readings which is throwing off all my calculations. I tried to put in a new lower FTP and run the recalculation but it still reads high and it says i’m fresh, and i’m actually not. Is there any way to normalise this back down to the real power readings based on more recent and older rides? Thanks.

You can flag activities that you know are wrong. Alternatively, you can export/fix/re-import using something www.fitfiletools.com if you don’t have too many. If you have a lot ofa activities to flag, use the bulk flag option in the Activities Table to reduce the amount of time needed.