Thanks to the awesome Bionic Wookiee for this great blog and images showing how he removes the RockaDex patch and replaces it with a new one, not only by himself but one handed ;) David has been one of our customers from the beginning and has lots of other great info on his site, check it out! 

https://bionicwookiee.com/2018/09/05/re-taping-my-cgm-sensor/